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Title: Band-gap tuning of lead halide perovskites using a sequential deposition process
Authors: Kulkarni, Sneha A.
Baikie, Tom
Boix, Pablo P.
Yantara, Natalia
Mathews, Nripan
Mhaisalkar, Subodh
Keywords: DRNTU::Engineering::Materials
Issue Date: 2014
Source: Kulkarni, S. A., Baikie, T., Boix, P. P., Yantara, N., Mathews, N., & Mhaisalkar, S. (2014). Band-gap tuning of lead halide perovskites using a sequential deposition process. Journal of materials chemistry a, 2(24), 9221-9225.
Series/Report no.: Journal of materials chemistry A
Abstract: Band-gap tuning of mixed anion lead halide perovskites (MAPb(I1−xBrx)2 (0 ≤ x ≤ 1)) has been demonstrated by means of a sequential deposition process. The optical properties of perovskite hybrids can be flexibly modified by changing (mixing) the concentration of halogen precursors. The concentrations of precursor solution as well as the conversion time play an important role in determining the band-gap of perovskites. A systematic shift of the absorption band edge to shorter wavelengths is observed with increasing Br content in the perovskite films, which results in the decrement of the photocurrent. Nanorod like morphological features are also observed for perovskite films with an iodide to bromide molar ratio of <0.7.
ISSN: 2050-7488
DOI: 10.1039/C4TA00435C
Rights: This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:ERI@N Journal Articles
MSE Journal Articles

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