Tunability of Band Gap and Photoluminescence in CH3NH3PbI3 Films by Anodized Aluminum Oxide Templates

Abstract Hybrid organic-inorganic halide CH3NH3PbI3 perovskite films are deposited on anodized aluminum oxide templates with the different pore diameters via one-step spin coating method. The obvious 0.082 eV blue shift of optical band gap is observed in films with decreasing the diameters of pores...

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Autores principales:	Zhan Zhang, Min Wang, Lixia Ren, Kexin Jin
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4db1519fb80b421d82f0d5ecd2d6cf55
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spelling	oai:doaj.org-article:4db1519fb80b421d82f0d5ecd2d6cf552021-12-02T15:05:40ZTunability of Band Gap and Photoluminescence in CH3NH3PbI3 Films by Anodized Aluminum Oxide Templates10.1038/s41598-017-02144-x2045-2322https://doaj.org/article/4db1519fb80b421d82f0d5ecd2d6cf552017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02144-xhttps://doaj.org/toc/2045-2322Abstract Hybrid organic-inorganic halide CH3NH3PbI3 perovskite films are deposited on anodized aluminum oxide templates with the different pore diameters via one-step spin coating method. The obvious 0.082 eV blue shift of optical band gap is observed in films with decreasing the diameters of pores from 400 to 30 nm. And numerical simulations based on finite element modeling are carried out to represent the absorption edge and consistent with the experiment results. It is interesting that the films show the intense photoluminescence with the excitation intensity of less than 1 μW. Moreover, the photoluminescence intensity is increased with increasing pore diameters, which is attributed to the radiative recombination rate of photogenerated electrons and holes. These results pave a way for the further understanding of tunable photophysical properties of perovskite films.Zhan ZhangMin WangLixia RenKexin JinNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Zhan Zhang Min Wang Lixia Ren Kexin Jin Tunability of Band Gap and Photoluminescence in CH3NH3PbI3 Films by Anodized Aluminum Oxide Templates
description	Abstract Hybrid organic-inorganic halide CH3NH3PbI3 perovskite films are deposited on anodized aluminum oxide templates with the different pore diameters via one-step spin coating method. The obvious 0.082 eV blue shift of optical band gap is observed in films with decreasing the diameters of pores from 400 to 30 nm. And numerical simulations based on finite element modeling are carried out to represent the absorption edge and consistent with the experiment results. It is interesting that the films show the intense photoluminescence with the excitation intensity of less than 1 μW. Moreover, the photoluminescence intensity is increased with increasing pore diameters, which is attributed to the radiative recombination rate of photogenerated electrons and holes. These results pave a way for the further understanding of tunable photophysical properties of perovskite films.
format	article
author	Zhan Zhang Min Wang Lixia Ren Kexin Jin
author_facet	Zhan Zhang Min Wang Lixia Ren Kexin Jin
author_sort	Zhan Zhang
title	Tunability of Band Gap and Photoluminescence in CH3NH3PbI3 Films by Anodized Aluminum Oxide Templates
title_short	Tunability of Band Gap and Photoluminescence in CH3NH3PbI3 Films by Anodized Aluminum Oxide Templates
title_full	Tunability of Band Gap and Photoluminescence in CH3NH3PbI3 Films by Anodized Aluminum Oxide Templates
title_fullStr	Tunability of Band Gap and Photoluminescence in CH3NH3PbI3 Films by Anodized Aluminum Oxide Templates
title_full_unstemmed	Tunability of Band Gap and Photoluminescence in CH3NH3PbI3 Films by Anodized Aluminum Oxide Templates
title_sort	tunability of band gap and photoluminescence in ch3nh3pbi3 films by anodized aluminum oxide templates
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/4db1519fb80b421d82f0d5ecd2d6cf55
work_keys_str_mv	AT zhanzhang tunabilityofbandgapandphotoluminescenceinch3nh3pbi3filmsbyanodizedaluminumoxidetemplates AT minwang tunabilityofbandgapandphotoluminescenceinch3nh3pbi3filmsbyanodizedaluminumoxidetemplates AT lixiaren tunabilityofbandgapandphotoluminescenceinch3nh3pbi3filmsbyanodizedaluminumoxidetemplates AT kexinjin tunabilityofbandgapandphotoluminescenceinch3nh3pbi3filmsbyanodizedaluminumoxidetemplates
_version_	1718388763239907328

Tunability of Band Gap and Photoluminescence in CH3NH3PbI3 Films by Anodized Aluminum Oxide Templates

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