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Charge Photogeneration and Transport in AgBiS 2 Nanocrystal Films for Photovoltaics
Author(s) -
Diedenhofen Silke L.,
Bernechea Maria,
Felter Kevin M.,
Grozema Ferdinand C.,
Siebbeles Laurens D. A.
Publication year - 2019
Publication title -
solar rrl
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.544
H-Index - 37
ISSN - 2367-198X
DOI - 10.1002/solr.201900075
Subject(s) - nanocrystal , photovoltaics , materials science , recombination , optoelectronics , quantum yield , charge (physics) , charge carrier , exciton , electron , chemical physics , nanotechnology , photovoltaic system , chemistry , condensed matter physics , optics , physics , ecology , biochemistry , fluorescence , biology , quantum mechanics , gene
Solution‐processed AgBiS 2 nanocrystal films are a promising material for nontoxic, earth‐abundant solar cells. While solar cells with good device efficiency are demonstrated, so far, hardly anything is known about charge generation, transport, and recombination processes in these films. Here, a photoinduced time‐resolved microwave conductivity study on AgBiS 2 nanocrystal films is presented. By modeling the experimental data with density‐dependent recombination processes, the product of the temperature‐dependent electron and hole quantum yield and mobility, and the electron and hole recombination kinetics are determined.