Back to Search
Start Over
Dual Interfacial Modifications Enable High Performance Semitransparent Perovskite Solar Cells with Large Open Circuit Voltage and Fill Factor.
- Source :
- Advanced Energy Materials; 5/10/2017, Vol. 7 Issue 9, pn/a-N.PAG, 9p
- Publication Year :
- 2017
-
Abstract
- In this work, both anode and cathode interfaces of p-i-n CH<subscript>3</subscript>NH<subscript>3</subscript>PbI<subscript>3</subscript> perovskite solar cells (PVSCs) are simultaneously modified to achieve large open-circuit voltage (V<subscript>oc</subscript>) and fill factor (FF) for high performance semitransparent PVSCs (ST-PVSCs). At the anode, modified NiO serves as an efficient hole transport layer with appropriate surface property to promote the formation of smooth perovskite film with high coverage. At the cathode, a fullerene bisadduct, C<subscript>60</subscript>(CH<subscript>2</subscript>)(Ind), with a shallow lowest unoccupied molecular orbital level, is introduced to replace the commonly used phenyl-C<subscript>61</subscript>-butyric acid methyl ester (PCBM) as an alternative electron transport layer in PVSCs for better energy level matching with the conduction band of the perovskite layer. Therefore, the V<subscript>oc</subscript>, FF and power conversion efficiency (PCE) of the PVSCs increase from 1.05 V, 0.74 and 16.2% to 1.13 V, 0.80 and 18.1% when the PCBM is replaced by C<subscript>60</subscript>(CH<subscript>2</subscript>)(Ind). With the advantages of high V<subscript>oc</subscript> and FF, ST-PVSCs are also fabricated using an ultrathin transparent Ag as cathode, showing an encouraging PCEs of 12.6% with corresponding average visible transmittance (AVT) over 20%. These are the highest PCEs reported for ST-PVSCs with similar AVTs paving the way for using ST-PVSCs as power generating windows. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16146832
- Volume :
- 7
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Advanced Energy Materials
- Publication Type :
- Academic Journal
- Accession number :
- 122960765
- Full Text :
- https://doi.org/10.1002/aenm.201602333