CH3NH3PbI3 thin films prepared by hot-casting technique in the air: Growth mechanism, trap states and relating solar cells. Faibut, N.; Kamlangwan, P.; Jarernboon, W.; Klangtakai, P.; Harnchana, V.; and Amornkitbamrung, V. Japanese Journal of Applied Physics, 2019. cited By 0
CH3NH3PbI3 thin films prepared by hot-casting technique in the air: Growth mechanism, trap states and relating solar cells [link]Paper  doi  abstract   bibtex   
Tetragonal CH3NH3PbI3 perovskite thin films with large crystallite sizes were successfully fabricated under atmospheric air using a one-step hot-casting technique. The casting temperature governed structural and optical properties of the prepared films. The energy gaps of the hot-casted films changed with changing casting temperature due to the variation of Urbach energy. The hot-casted perovskite thin films had superior structural stability to that of the two-step method films. However, the hot-casted perovskite films contained trap states as suggested by additional emissions other than bimolecular recombination in photoluminescence spectra. The origins of these trap states were believed to be attributed to the presence of iodine vacancies (V I), iodine interstitial sites (I i) and methylammonium ion vacancies (V MA) in the prepared films. The fabricated perovskite solar cells showed that at low casting temperatures the power conversion efficiencies were relatively higher than the higher ones, this was attributed to their lower non-radiative recombination activities. © 2019 The Japan Society of Applied Physics.
@ARTICLE{Faibut2019,
author={Faibut, N. and Kamlangwan, P. and Jarernboon, W. and Klangtakai, P. and Harnchana, V. and Amornkitbamrung, V.},
title={CH3NH3PbI3 thin films prepared by hot-casting technique in the air: Growth mechanism, trap states and relating solar cells},
journal={Japanese Journal of Applied Physics},
year={2019},
volume={58},
number={SI},
doi={10.7567/1347-4065/ab2535},
art_number={SIID07},
note={cited By 0},
url={https://www.scopus.com/inward/record.uri?eid=2-s2.0-85072841563&doi=10.7567%2f1347-4065%2fab2535&partnerID=40&md5=b28d873ad3b36b3b1244303d9935a247},
affiliation={Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand; Integrated Nanotechnology Research Center, Khon Kaen University, Khon Kaen, 40002, Thailand; Thailand Center of Excellence in Physics, Chiang Mai University, P.O. Box 70, Chiang Mai, 50202, Thailand; Institute of Nanomaterials Research and Innovation for Energy (IN-RIE), Research Network of NANOTEC- KKU (RNN), Khon Kaen University, Khon Kaen, 40002, Thailand},
abstract={Tetragonal CH3NH3PbI3 perovskite thin films with large crystallite sizes were successfully fabricated under atmospheric air using a one-step hot-casting technique. The casting temperature governed structural and optical properties of the prepared films. The energy gaps of the hot-casted films changed with changing casting temperature due to the variation of Urbach energy. The hot-casted perovskite thin films had superior structural stability to that of the two-step method films. However, the hot-casted perovskite films contained trap states as suggested by additional emissions other than bimolecular recombination in photoluminescence spectra. The origins of these trap states were believed to be attributed to the presence of iodine vacancies (V I), iodine interstitial sites (I i) and methylammonium ion vacancies (V MA) in the prepared films. The fabricated perovskite solar cells showed that at low casting temperatures the power conversion efficiencies were relatively higher than the higher ones, this was attributed to their lower non-radiative recombination activities. © 2019 The Japan Society of Applied Physics.},
document_type={Article},
source={Scopus},
}
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