Highly stable and efficient hybrid perovskite solar cells improved with conductive polyanilines
- School of Chemistry and Chemical Engineering, Guangxi University, 100 University Road, Nanning, 530004 (China)
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA, 95064 (United States)
Highlights: • MAPbI{sub 3} perovskite film has been fabricated and modified with polyanilines for highly stable and efficient solar cells. • For the C-PNAI modified perovskite solar cells, a PCE enhanced from 7.91% to 9.43% as the fill factor improved. • The C-PNAI surfaces of perovskite film assists in the hole transport to the conductive carbon in the device. • The improved stability is attributed to the –NH{sub 2}{sup +}– of C-PNAI cations on the surface of the perovskites. - Abstract: Methyl ammonium lead iodide (MAPbI{sub 3}) perovskite film has been fabricated and modified with conductive polyanilines (C- PANI) and demonstrated for highly stable and efficient solar cells. For the C-PANI modified perovskite solar cells (PSCs), the average short circuit current density increased by 13.8% compared with pristine perovskite film (i.e., from 15.9 to 18.1 mA/cm{sup 2}) and the fill factor also improved, eventually leading to a power conversion efficiency (PCE) enhancement from 7.91% to 9.43% with high reproducibility. The C-PANI acts as a scaffold for crystallization of the perovskite layer, and improves the perovskite photovoltaic performance and stability, attributed to the favorable interfacial interaction between –NH{sub 2}{sup +}– groups of C-PANI and I{sup −} of MAPbI{sub 3} perovskite. The C-PANI-rich surfaces of MAPbI{sub 3}/PNAI perovskite film may also assists in the hole transport to the conductive carbon in the device. This work demonstrates that C-PANI can enhance the PCE and stability of PSCs.
- OSTI ID:
- 22805205
- Journal Information:
- Materials Research Bulletin, Vol. 106; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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