Anomalous photoluminescence in InP(1−x)Bi(x)

Low temperature photoluminescence (PL) from InP(1−x)Bi(x) thin films with Bi concentrations in the 0–2.49% range reveals anomalous spectral features with strong and very broad (linewidth of 700 nm) PL signals compared to other bismide alloys. Multiple transitions are observed and their energy levels...

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Autores principales: Wu, Xiaoyan, Chen, Xiren, Pan, Wenwu, Wang, Peng, Zhang, Liyao, Li, Yaoyao, Wang, Hailong, Wang, Kai, Shao, Jun, Wang, Shumin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4904191/
https://www.ncbi.nlm.nih.gov/pubmed/27291823
http://dx.doi.org/10.1038/srep27867
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author Wu, Xiaoyan
Chen, Xiren
Pan, Wenwu
Wang, Peng
Zhang, Liyao
Li, Yaoyao
Wang, Hailong
Wang, Kai
Shao, Jun
Wang, Shumin
author_facet Wu, Xiaoyan
Chen, Xiren
Pan, Wenwu
Wang, Peng
Zhang, Liyao
Li, Yaoyao
Wang, Hailong
Wang, Kai
Shao, Jun
Wang, Shumin
author_sort Wu, Xiaoyan
collection PubMed
description Low temperature photoluminescence (PL) from InP(1−x)Bi(x) thin films with Bi concentrations in the 0–2.49% range reveals anomalous spectral features with strong and very broad (linewidth of 700 nm) PL signals compared to other bismide alloys. Multiple transitions are observed and their energy levels are found much smaller than the band-gap measured from absorption measurements. These transitions are related to deep levels confirmed by deep level transient spectroscopy, which effectively trap free holes and enhance radiative recombination. The broad luminescence feature is beneficial for making super-luminescence diodes, which can theoretically enhance spatial resolution beyond 1 μm in optical coherent tomography (OCT).
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spelling pubmed-49041912016-06-14 Anomalous photoluminescence in InP(1−x)Bi(x) Wu, Xiaoyan Chen, Xiren Pan, Wenwu Wang, Peng Zhang, Liyao Li, Yaoyao Wang, Hailong Wang, Kai Shao, Jun Wang, Shumin Sci Rep Article Low temperature photoluminescence (PL) from InP(1−x)Bi(x) thin films with Bi concentrations in the 0–2.49% range reveals anomalous spectral features with strong and very broad (linewidth of 700 nm) PL signals compared to other bismide alloys. Multiple transitions are observed and their energy levels are found much smaller than the band-gap measured from absorption measurements. These transitions are related to deep levels confirmed by deep level transient spectroscopy, which effectively trap free holes and enhance radiative recombination. The broad luminescence feature is beneficial for making super-luminescence diodes, which can theoretically enhance spatial resolution beyond 1 μm in optical coherent tomography (OCT). Nature Publishing Group 2016-06-13 /pmc/articles/PMC4904191/ /pubmed/27291823 http://dx.doi.org/10.1038/srep27867 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Wu, Xiaoyan
Chen, Xiren
Pan, Wenwu
Wang, Peng
Zhang, Liyao
Li, Yaoyao
Wang, Hailong
Wang, Kai
Shao, Jun
Wang, Shumin
Anomalous photoluminescence in InP(1−x)Bi(x)
title Anomalous photoluminescence in InP(1−x)Bi(x)
title_full Anomalous photoluminescence in InP(1−x)Bi(x)
title_fullStr Anomalous photoluminescence in InP(1−x)Bi(x)
title_full_unstemmed Anomalous photoluminescence in InP(1−x)Bi(x)
title_short Anomalous photoluminescence in InP(1−x)Bi(x)
title_sort anomalous photoluminescence in inp(1−x)bi(x)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4904191/
https://www.ncbi.nlm.nih.gov/pubmed/27291823
http://dx.doi.org/10.1038/srep27867
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