Effect of solvent vapour annealing on bismuth triiodide film for photovoltaic applications and its optoelectronic properties

Autor:	Yasuhiro Shirai, Shodruz T. Umedov, Masatoshi Yanagida, Muthu Gomathy M. Pandian, Kenjiro Miyano, Anastasia V. Grigorieva, Shanthi Subashchandran, Dhruba B. Khadka
Rok vydání:	2020
Předmět:	Fabrication Materials science business.industry Open-circuit voltage Annealing (metallurgy) Energy conversion efficiency chemistry.chemical_element Crystal growth General Chemistry Grain size Bismuth chemistry.chemical_compound chemistry Materials Chemistry Optoelectronics Triiodide business
Zdroj:	Journal of Materials Chemistry C. 8:12173-12180
ISSN:	2050-7534 2050-7526
DOI:	10.1039/d0tc02455d
Popis:	We report on solution-processed bismuth triiodide (BiI3) solar cells and their optoelectronic properties under different fabrication approaches. The BiI3 films crystallized by annealing under controlled solvent vapour conditions were found to have dominant effects on film morphology as well as the crystal growth. The photovoltaic device with BiI3 film followed by annealing under a chlorobenzene vapour atmosphere demonstrated the best power conversion efficiency of ∼1.01% with an open circuit voltage of 0.587 V in the inverted device configuration. This is attributed to the improvement in film quality comprising uniform morphology, increase in grain size, and hence mitigation of defect profile. Based on the material growth properties, and device analysis, our report provides insight into the correlation between film morphology, opto-physical properties, and defect profile in the BiI3 based device.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c1d8146c9c344c9492414b4072797283 https://doi.org/10.1039/d0tc02455d Zobrazit plný text záznamu