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19% Efficient P3CT-Na Based MAPbI3 Solar Cells with a Simple Double-Filtering Process

Authors :
Ji-Lin Shen
Qi-Bin Ke
Shou-En Chiang
Yung-Sheng Yen
Hsin-Ming Cheng
Anjali Chandel
Sheng Hsiung Chang
Source :
Polymers, Volume 13, Issue 6, Polymers, Vol 13, Iss 886, p 886 (2021)
Publication Year :
2021
Publisher :
Multidisciplinary Digital Publishing Institute, 2021.

Abstract

A high-efficiency inverted-type CH3NH3PbI3 (MAPbI3) solar cell was fabricated by using a ultrathin poly[3-(4-carboxybutyl)thiophene-2,5-diyl]-Na (P3CT-Na) film as the hole transport layer. The averaged power conversion efficiency (PCE) can be largely increased from 11.72 to 18.92% with a double-filtering process of the P3CT-Na solution mainly due to the increase in short-circuit current density (JSC) from 19.43 to 23.88 mA/cm2, which means that the molecular packing structure of P3CT-Na thin film can influence the formation of the MAPbI3 thin film and the contact quality at the MAPbI3/P3CT-Na interface. Zeta potentials, atomic-force microscopic images, absorbance spectra, photoluminescence spectra, X-ray diffraction patterns, and Raman scattering spectra are used to understand the improvement in the JSC. Besides, the light intensity-dependent and wavelength-dependent photovoltaic performance of the MAPbI3 solar cells shows that the P3CT-Na thin film is not only used as the hole transport layer but also plays an important role during the formation of a high-quality MAPbI3 thin film. It is noted that the PCE values of the best P3CT-Na based MAPbI3 solar cell are higher than 30% in the yellow-to-near infrared wavelength range under low light intensities. On the other hand, it is predicted that the double-filtering method can be readily used to increase the PCE of polymer based solar cells.

Details

Language :
English
ISSN :
20734360
Database :
OpenAIRE
Journal :
Polymers
Accession number :
edsair.doi.dedup.....17f65a2c761851c5b984a1f4ded6b082
Full Text :
https://doi.org/10.3390/polym13060886