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Solution-Processed Bil(3) Thin Films for Photovoltaic Applications: Improved Carrier Collection via Solvent Annealing

TitleSolution-Processed Bil(3) Thin Films for Photovoltaic Applications: Improved Carrier Collection via Solvent Annealing
Publication TypeJournal Article
Year of Publication2016
AuthorsHamdeh, UH, Nelson, RD, Ryan, BJ, Bhattacharjee, U, Petrich, JW, Panthani, MG
JournalChemistry of Materials
Volume28
Pagination6567-6574
Date Published09
Type of ArticleArticle
ISBN Number0897-4756
Accession NumberWOS:000384399000021
Keywordsband-gap, ch3nh3pbi3, chemistry, crystal-growth, dots, efficiency, light harvesters, Materials Science, methylammonium lead iodide, nanocrystal inks, performance, perovskite, perovskite solar-cells, quantum
Abstract

= 100 degrees C) resulted in increased grain size and crystallographic reorientation of grains within the films. The BiI3 films were stable against oxidation for several months and could withstand several hours of annealing in air at temperatures below 150 degrees C without degradation. Surface oxidation was found to improve photovoltaic device performance due to the formation of a BiOI layer at the BiI3 surface which facilitated hole extraction. Nonoptimized BiI3 solar cells achieved the highest power conversion efficiencies of 1.0%, demonstrating the potential of BiI3 as a nontoxic, air-stable metal-halide absorber material for photovoltaic applications.

DOI10.1021/acs.chemmater.6b02347
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Alternate JournalChem. Mat.