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Solution-Processed, Inverted AgBiS 2 Nanocrystal Solar Cells.
- Source :
-
ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2022 Jan 12; Vol. 14 (1), pp. 1634-1642. Date of Electronic Publication: 2021 Dec 25. - Publication Year :
- 2022
-
Abstract
- AgBiS <subscript>2</subscript> nanocrystals are a promising nontoxic alternative to PbS, CsPbI <subscript>3</subscript> , and CdS quantum dots for solution-fabricated nanocrystal photovoltaics. In this work, we fabricated the first inverted (p-i-n) structure AgBiS <subscript>2</subscript> nanocrystal solar cells. We selected spray-coated NiO as the hole-transporting material and used PCBM/BCP as the electron-transporting material. Combining transient photocurrent and photovoltage measurements with femtosecond transient absorption spectroscopy, we investigated the charge collection process on metal oxide/AgBiS <subscript>2</subscript> interfaces and demonstrated that the NiO/AgBiS <subscript>2</subscript> NC junction in the p-i-n configuration is more efficient for charge carrier collection. The fabricated p-i-n solar cells exhibited a 4.3% power conversion efficiency (PCE), which was higher than that of conventional n-i-p solar cells fabricated using the same sample. Additionally, inverted devices showed an ultrahigh short-circuit current ( J <subscript>SC</subscript> ) over 20.7 mA cm <superscript>-2</superscript> and 0.38 V open-circuit voltage ( V <subscript>OC</subscript> ), suggesting their potential for further improvements in efficiency and, eventually, for large-scale production.
Details
- Language :
- English
- ISSN :
- 1944-8252
- Volume :
- 14
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- ACS applied materials & interfaces
- Publication Type :
- Academic Journal
- Accession number :
- 34955017
- Full Text :
- https://doi.org/10.1021/acsami.1c17133