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2. An open-access database and analysis tool for perovskite solar cells based on the FAIR data principles

Author

Jacobsson, T. Jesper, Hultqvist, Adam, García-Fernández, Alberto, Anand, Aman, Al-Ashouri, Amran, Hagfeldt, Anders, Crovetto, Andrea, Abate, Antonio, Ricciardulli, Antonio Gaetano, Vijayan, Anuja, Kulkarni, Ashish, Anderson, Assaf Y., Darwich, Barbara Primera, Yang, Bowen, Coles, Brendan L., Perini, Carlo A. R., Rehermann, Carolin, Ramirez, Daniel, Fairen-Jimenez, David, Di Girolamo, Diego, Jia, Donglin, Avila, Elena, Juarez-Perez, Emilio J., Baumann, Fanny, Mathies, Florian, González, G. S. Anaya, Boschloo, Gerrit, Nasti, Giuseppe, Paramasivam, Gopinath, Martínez-Denegri, Guillermo, Näsström, Hampus, Michaels, Hannes, Köbler, Hans, Wu, Hua, Benesperi, Iacopo, Dar, M. Ibrahim, Bayrak Pehlivan, Ilknur, Gould, Isaac E., Vagott, Jacob N., Dagar, Janardan, Kettle, Jeff, Yang, Jie, Li, Jinzhao, Smith, Joel A., Pascual, Jorge, Jerónimo-Rendón, Jose J., Montoya, Juan Felipe, Correa-Baena, Juan-Pablo, Qiu, Junming, Wang, Junxin, Sveinbjörnsson, Kári, Hirselandt, Katrin, Dey, Krishanu, Frohna, Kyle, Mathies, Lena, Castriotta, Luigi A., Aldamasy, Mahmoud. H., Vasquez-Montoya, Manuel, Ruiz-Preciado, Marco A., Flatken, Marion A., Khenkin, Mark V., Grischek, Max, Kedia, Mayank, Saliba, Michael, Anaya, Miguel, Veldhoen, Misha, Arora, Neha, Shargaieva, Oleksandra, Maus, Oliver, Game, Onkar S., Yudilevich, Ori, Fassl, Paul, Zhou, Qisen, Betancur, Rafael, Munir, Rahim, Patidar, Rahul, Stranks, Samuel D., Alam, Shahidul, Kar, Shaoni, Unold, Thomas, Abzieher, Tobias, Edvinsson, Tomas, David, Tudur Wyn, Paetzold, Ulrich W., Zia, Waqas, Fu, Weifei, Zuo, Weiwei, Schröder, Vincent R. F., Tress, Wolfgang, Zhang, Xiaoliang, Chiang, Yu-Hsien, Iqbal, Zafar, Xie, Zhiqiang, and Unger, Eva

Published
2022
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6. Ultrasonic Spray Deposition of a Passivating Agent for Spray-Coated, Methylammonium-Free Perovskite Solar Cells.

Author

Cassella, Elena J., Thornber, Timothy, Oliver, Robert D. J., O'Kane, Mary E., Spooner, Emma L. K., Kilbride, Rachel C., Catley, Thomas E., Game, Onkar S., Ramadan, Alexandra J., and Lidzey, David G.

Subjects
SOLAR cells, PEROVSKITE, PASSIVATION, SURFACE passivation, SURFACE preparation, OPEN-circuit voltage
Abstract

Defect management in perovskite solar cells (PSCs) via surface passivation has become a cornerstone in maximizing both stability and solar-to-electrical power conversion efficiency (PCE) of devices by reducing defect densities and/or improving energetic alignment between the perovskite and charge-transporting layers. Despite this, few reports explore the use of roll-to-roll compatible technologies to deposit such interfacial treatments, limiting the applicability of passivation in real-world contexts. In this work, iso-butylammonium bromide (i-BABr) is spray-coated onto a Cs0.15FA0.85PbI2.85Cl0.15 perovskite surface which is deposited using gas-assisted ultrasonic spray coating. It is found that i-BABr treatments result in the formation of a quasi-2D perovskite layer. The spray-coated surface treatment results in an impressive 80 mV improvement in the median open-circuit voltage with respect to untreated devices. Importantly, the spray-coated passivation results in very similar positive benefits to the application of spin-coated treatments demonstrating the promise of the spray-passivation methodology. It is shown that devices created in this manner demonstrate PCEs of up to 21.0% (19.4% stabilized), representing the highest reported efficiency for one-step, spray-coated methylammonium-free PSCs. This work represents the first demonstration of a spray-coated surface passivation treatment that is compatible with high-throughput, roll-to-roll processing. [ABSTRACT FROM AUTHOR]

Published
2024
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7. Direct Integration of Perovskite Solar Cells with Carbon Fibre Substrates

Author

Game, Onkar S., primary, Thornber, Timothy, additional, Cepero‐Mejías, Fernando, additional, Infante‐Ortega, Luis C., additional, Togay, Mustafa, additional, Cassella, Elena J., additional, Kilbride, Rachel C., additional, Gordon, Robert H., additional, Mullin, Nic, additional, Greenhalgh, Rachael C., additional, Isherwood, Patrick J. M., additional, Walls, J. Michael, additional, Fairclough, J. Patrick A., additional, and Lidzey, David G., additional

Published
2023
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9. Nonplanar Spray-Coated Perovskite Solar Cells

Author

Thornber, Timothy, primary, Game, Onkar S., additional, Cassella, Elena J., additional, O’Kane, Mary E., additional, Bishop, James E., additional, Routledge, Thomas J., additional, Alanazi, Tarek I., additional, Togay, Mustafa, additional, Isherwood, Patrick J. M., additional, Infante-Ortega, Luis C., additional, Hammond, Deborah B., additional, Walls, John M., additional, and Lidzey, David G., additional

Published
2022
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12. An open-access database and analysis tool for perovskite solar cells based on the FAIR data principles

Author

Jacobsson, T. Jesper, primary, Hultqvist, Adam, additional, García-Fernández, Alberto, additional, Anand, Aman, additional, Al-Ashouri, Amran, additional, Hagfeldt, Anders, additional, Crovetto, Andrea, additional, Abate, Antonio, additional, Ricciardulli, Antonio Gaetano, additional, Vijayan, Anuja, additional, Kulkarni, Ashish, additional, Anderson, Assaf Y., additional, Darwich, Barbara Primera, additional, Yang, Bowen, additional, Coles, Brendan L., additional, Perini, Carlo A. R., additional, Rehermann, Carolin, additional, Ramirez, Daniel, additional, Fairen-Jimenez, David, additional, Di Girolamo, Diego, additional, Jia, Donglin, additional, Avila, Elena, additional, Juarez-Perez, Emilio J., additional, Baumann, Fanny, additional, Mathies, Florian, additional, González, G. S. Anaya, additional, Boschloo, Gerrit, additional, Nasti, Giuseppe, additional, Paramasivam, Gopinath, additional, Martínez-Denegri, Guillermo, additional, Näsström, Hampus, additional, Michaels, Hannes, additional, Köbler, Hans, additional, Wu, Hua, additional, Benesperi, Iacopo, additional, Dar, M. Ibrahim, additional, Bayrak Pehlivan, Ilknur, additional, Gould, Isaac E., additional, Vagott, Jacob N., additional, Dagar, Janardan, additional, Kettle, Jeff, additional, Yang, Jie, additional, Li, Jinzhao, additional, Smith, Joel A., additional, Pascual, Jorge, additional, Jerónimo-Rendón, Jose J., additional, Montoya, Juan Felipe, additional, Correa-Baena, Juan-Pablo, additional, Qiu, Junming, additional, Wang, Junxin, additional, Sveinbjörnsson, Kári, additional, Hirselandt, Katrin, additional, Dey, Krishanu, additional, Frohna, Kyle, additional, Mathies, Lena, additional, Castriotta, Luigi A., additional, Aldamasy, Mahmoud. H., additional, Vasquez-Montoya, Manuel, additional, Ruiz-Preciado, Marco A., additional, Flatken, Marion A., additional, Khenkin, Mark V., additional, Grischek, Max, additional, Kedia, Mayank, additional, Saliba, Michael, additional, Anaya, Miguel, additional, Veldhoen, Misha, additional, Arora, Neha, additional, Shargaieva, Oleksandra, additional, Maus, Oliver, additional, Game, Onkar S., additional, Yudilevich, Ori, additional, Fassl, Paul, additional, Zhou, Qisen, additional, Betancur, Rafael, additional, Munir, Rahim, additional, Patidar, Rahul, additional, Stranks, Samuel D., additional, Alam, Shahidul, additional, Kar, Shaoni, additional, Unold, Thomas, additional, Abzieher, Tobias, additional, Edvinsson, Tomas, additional, David, Tudur Wyn, additional, Paetzold, Ulrich W., additional, Zia, Waqas, additional, Fu, Weifei, additional, Zuo, Weiwei, additional, Schröder, Vincent R. F., additional, Tress, Wolfgang, additional, Zhang, Xiaoliang, additional, Chiang, Yu-Hsien, additional, Iqbal, Zafar, additional, Xie, Zhiqiang, additional, and Unger, Eva, additional

Published
2021
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14. Rapid Scalable Processing of Tin Oxide Transport Layers for Perovskite Solar Cells

Author

Smith, Joel A., primary, Game, Onkar S., additional, Bishop, James E., additional, Spooner, Emma L. K., additional, Kilbride, Rachel C., additional, Greenland, Claire, additional, Jayaprakash, Rahul, additional, Alanazi, Tarek I., additional, Cassella, Elena J., additional, Tejada, Alvaro, additional, Chistiakova, Ganna, additional, Wong-Stringer, Michael, additional, Routledge, Thomas J., additional, Parnell, Andrew J., additional, Hammond, Deborah B., additional, and Lidzey, David G., additional

Published
2020
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17. Comprehensive elucidation of ion transport and its relation to hysteresis in methylammonium lead iodide perovskite thin films

Author

Khassaf, Hamidreza, Yadavalli, Srinivas K., Game, Onkar S., Zhou, Yuanyuan, Padture, Nitin P., Kingon, Angus I., Khassaf, Hamidreza, Yadavalli, Srinivas K., Game, Onkar S., Zhou, Yuanyuan, Padture, Nitin P., and Kingon, Angus I.

Abstract

The “dark” current–voltage (I–V) response of CH3NH3PbI3 organic–inorganic halide perovskite (OIHP) thin films is studied as a function of temperature, voltage, and scan rate to investigate the nature of the I–V hysteresis. This is to address the apparent discrepancy observed in characteristics of the I–V hysteresis. Depending on the measurement conditions, two complementary mechanisms appear to control the I–V behavior. First, ionic species contribute to the conduction, and because of their slow-moving nature, a slower scan rate gives ions enough time to take part in conduction (i.e., below a relaxation frequency). Second, migration of ionic species to the interface(s) modulates the Schottky junction and, consequently, the electronic transport across the interfaces. Therefore, a slower scan rate results in more charge accumulation at the interface, which leads to a decrease in the leakage current. These findings provide an explanation that resolves the ongoing debate regarding the characteristics of the I–V hysteresis in solar cells based on OIHPs.

Published
2019

19. Enhancing the efficiency of PTB7-Th:COi8DFIC-based ternary solar cells with versatile third components

Author

Li, Wei, primary, Xiao, Zuo, additional, Smith, Joel A., additional, Cai, Jinlong, additional, Li, Donghui, additional, Kilbride, Rachel C., additional, Spooner, Emma L. K., additional, Game, Onkar S., additional, Meng, Xianyi, additional, Liu, Dan, additional, Jones, Richard A. L., additional, Lidzey, David G., additional, Ding, Liming, additional, and Wang, Tao, additional

Published
2019
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20. Correlating the electron-donating core structure with morphology and performance of carbon oxygen-bridged ladder-type non-fullerene acceptor based organic solar cells

Author

Li, Wei, primary, Xiao, Zuo, additional, Cai, Jinlong, additional, Smith, Joel A., additional, Spooner, Emma L.K., additional, Kilbride, Rachel C., additional, Game, Onkar S., additional, Meng, Xianyi, additional, Li, Donghui, additional, Zhang, Huijun, additional, Chen, Mengxue, additional, Gurney, Robert S., additional, Liu, Dan, additional, Jones, Richard A.L., additional, Lidzey, David G., additional, Ding, Liming, additional, and Wang, Tao, additional

Published
2019
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23. Low-dimensional emissive states in non-stoichiometric methylammonium lead halide perovskites

Author

Freestone, Benjamin G., primary, Smith, Joel A., additional, Piana, Giacomo, additional, Kilbride, Rachel C., additional, Parnell, Andrew J., additional, Sortino, Luca, additional, Coles, David M., additional, Ball, Orianna B., additional, Martsinovich, Natalia, additional, Thompson, Courtney J., additional, Alanazi, Tarek I., additional, Game, Onkar S., additional, Tartakovskii, Alexander I., additional, Lagoudakis, Pavlos, additional, and Lidzey, David G., additional

Published
2019
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24. A flexible back-contact perovskite solar micro-module

Author

Wong-Stringer, Michael, primary, Routledge, Thomas J., additional, McArdle, Trevor, additional, Wood, Christopher J., additional, Game, Onkar S., additional, Smith, Joel A., additional, Bishop, James E., additional, Vaenas, Naoum, additional, Coles, David M., additional, Buckley, Alastair R., additional, and Lidzey, David G., additional

Published
2019
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26. High‐Performance Multilayer Encapsulation for Perovskite Photovoltaics

Author

Wong‐Stringer, Michael, primary, Game, Onkar S., additional, Smith, Joel A., additional, Routledge, Thomas J., additional, Alqurashy, Bakhet A., additional, Freestone, Benjamin G., additional, Parnell, Andrew J., additional, Vaenas, Naoum, additional, Kumar, Vikas, additional, Alawad, Majed O. A., additional, Iraqi, Ahmed, additional, Rodenburg, Cornelia, additional, and Lidzey, David G., additional

Published
2018
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27. Ions Matter: Description of the Anomalous Electronic Behavior in Methylammonium Lead Halide Perovskite Devices

Author

Game, Onkar S., Buchsbaum, Gabriel J., Zhou, Yuanyuan, Padture, Nitin P., Kingon, Angus I., Game, Onkar S., Buchsbaum, Gabriel J., Zhou, Yuanyuan, Padture, Nitin P., and Kingon, Angus I.

Abstract

Carrier transport in methylammonium lead iodide (MAPbI3)-based hybrid organic–inorganic perovskites (HOIPs) is obscured by vacancy-mediated ion migration. Thus, the nature of migrating species (cation/anion) and their effect on electronic transport in MAPbI3 has remained controversial. Temperature-dependent pulsed voltage–current measurements of MAPbI3 thin films are performed under dark conditions, designed to decouple ion-migration/accumulation and electronic transport. Measurement conditions (electric-field history and scan rate) are shown to affect the electronic transport in MAPbI3 thin films, through a mechanism involving ion migration and accumulation at the electrode interfaces. The presence of thermally activated processes with distinct activation energies (Ea) of 0.1 ± 0.001 and 0.41 ± 0.02 eV is established, and are assigned to electromigration of iodine vacancies and methylammonium vacancies, respectively. Analysis of activation energies obtained from electronic conduction versus capacitive discharge shows that the electromigration of these ionic species is responsible for the modification of interfacial electronic properties of MAPbI3, and elaborates previously unaddressed issues of “fast” and “slow” ion migration. The results demonstrate that the intrinsic behavior of MAPbI3 material is responsible for the hysteresis of the solar cells, but also have implications for other HOIP-based devices, such as memristors, detectors, and energy storage devices. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Published
2017

29. Manipulating Crystallization of Organolead Mixed-Halide Thin Films in Antisolvent Baths for Wide-Bandgap Perovskite Solar Cells

Author

Zhou, Yuanyuan, Yang, Mengjin, Game, Onkar S., Wu, Wenwen, Kwun, Joonsuh, Strauss, Martin A., Yan, Yanfa, Huang, Jinsong, Zhu, Kai, Padture, Nitin P., Zhou, Yuanyuan, Yang, Mengjin, Game, Onkar S., Wu, Wenwen, Kwun, Joonsuh, Strauss, Martin A., Yan, Yanfa, Huang, Jinsong, Zhu, Kai, and Padture, Nitin P.

Abstract

Wide-bandgap perovskite solar cells (PSCs) based on organolead (I, Br)-mixed halide perovskites (e.g., MAPbI2Br and MAPbIBr2 perovskite with bandgaps of 1.77 and 2.05 eV, respectively) are considered as promising low-cost alternatives for application in tandem or multijunction photovoltaics (PVs). Here, we demonstrate that manipulating the crystallization behavior of (I, Br)-mixed halide perovskites in antisolvent bath is critical for the formation of smooth, dense thin films of these perovskites. Since the growth of perovskite grains from a precursor solution tends to be more rapid with increasing Br content, further enhancement in the nucleation rate becomes necessary for the effective decoupling of the nucleation and the crystal-growth stages in Br-rich perovskites. This is enabled by introducing simple stirring during antisolvent-bathing, which induces enhanced advection transport of the extracted precursor-solvent into the bath environment. Consequently, wide-bandgap planar PSCs fabricated using these high quality mixed-halide perovskite thin films, Br-rich MAPbIBr2, in particular, show enhanced PV performance. © 2016 American Chemical Society.

Published
2016

32. Microstructures of Organometal Trihalide Perovskites for Solar Cells: Their Evolution from Solutions and Characterization

Author

Zhou, Yuanyuan, Game, Onkar S., Pang, Shuping, Padture, Nitin P., Zhou, Yuanyuan, Game, Onkar S., Pang, Shuping, and Padture, Nitin P.

Abstract

The use of organometal trihalide perovskites (OTPs) in perovskite solar cells (PSCs) is revolutionizing the field of photovoltaics, which is being led by advances in solution processing of OTP thin films. First, we look at fundamental phenomena pertaining to nucleation/growth, coarsening, and microstructural evolution involved in the solution-processing of OTP thin films for PSCs from a materials-science perspective. Established scientific principles that govern some of these phenomena are invoked in the context of specific literature examples of solution-processed OTP thin films. Second, the nature and the unique characteristics of OTP thin-film microstructures themselves are discussed from a materials-science perspective. Finally, we discuss the challenges and opportunities in the characterization of OTP thin films for not only gaining a deep understanding of defects and microstructures but also elucidating classical and nonclassical phenomena pertaining to nucleation/growth, coarsening, and microstructural evolution in these films. The overall goal is to have deterministic control over the solution-processing of tailored OTP thin films with desired morphologies and microstructures. © 2015 American Chemical Society.

Published
2015

38. Correlating Phase Behavior with Photophysical Properties in Mixed‐Cation Mixed‐Halide Perovskite Thin Films.

Author

Greenland, Claire, Shnier, Adam, Rajendran, Sai K., Smith, Joel A., Game, Onkar S., Wamwangi, Daniel, Turnbull, Graham A., Samuel, Ifor D. W., Billing, David G., and Lidzey, David G.

Subjects
THIN films, X-ray diffraction measurement, HYBRID solar cells, PEROVSKITE, CHARGE carriers, CRYSTAL structure
Abstract

Mixed cation perovskites currently achieve very promising efficiency and operational stability when used as the active semiconductor in thin‐film photovoltaic devices. However, an in‐depth understanding of the structural and photophysical properties that drive this enhanced performance is still lacking. Here the prototypical mixed‐cation mixed‐halide perovskite (FAPbI3)0.85(MAPbBr3)0.15 is explored, and temperature‐dependent X‐ray diffraction measurements that are correlated with steady state and time‐resolved photoluminescence data are presented. The measurements indicate that this material adopts a pseudocubic perovskite α phase at room temperature, with a transition to a pseudotetragonal β phase occurring at ≈260 K. It is found that the temperature dependence of the radiative recombination rates correlates with temperature‐dependent changes in the structural configuration, and observed phase transitions also mark changes in the gradient of the optical bandgap. The work illustrates that temperature‐dependent changes in the perovskite crystal structure alter the charge carrier recombination processes and photoluminescence properties within such hybrid organic–inorganic materials. The findings have significant implications for photovoltaic performance at different operating temperatures, as well as providing new insight on the effect of alloying cations and halides on the phase behavior of hybrid perovskite materials. [ABSTRACT FROM AUTHOR]

Published
2020
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39. Intercalation crystallization of phase-pure α-HC(NH₂)₂PbI₃ upon microstructurally engineered PbI₂ thin films for planar perovskite solar cells.

Author

Zhou Y, Yang M, Kwun J, Game OS, Zhao Y, Pang S, Padture NP, and Zhu K

Abstract

The microstructure of the solid-PbI2 precursor thin film plays an important role in the intercalation crystallization of the formamidinium lead triiodide perovskite (α-HC(NH2)2PbI3). It is shown that microstructurally engineered PbI2 thin films with porosity and low crystallinity are the most favorable for conversion into uniform-coverage, phase-pure α-HC(NH2)2PbI3 perovskite thin films. Planar perovskite solar cells fabricated using these thin films deliver power conversion efficiency (PCE) up to 13.8%.

Published
2016
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