Cargando…

Anomalous photovoltaic effect in organic-inorganic hybrid perovskite solar cells

Organic-inorganic hybrid perovskites (OIHPs) have been demonstrated to be highly successful photovoltaic materials yielding very-high-efficiency solar cells. We report the room temperature observation of an anomalous photovoltaic (APV) effect in lateral structure OIHP devices manifested by the devic...

Descripción completa

Detalles Bibliográficos
Autores principales: Yuan, Yongbo, Li, Tao, Wang, Qi, Xing, Jie, Gruverman, Alexei, Huang, Jinsong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5357127/
https://www.ncbi.nlm.nih.gov/pubmed/28345043
http://dx.doi.org/10.1126/sciadv.1602164
_version_ 1782515989903048704
author Yuan, Yongbo
Li, Tao
Wang, Qi
Xing, Jie
Gruverman, Alexei
Huang, Jinsong
author_facet Yuan, Yongbo
Li, Tao
Wang, Qi
Xing, Jie
Gruverman, Alexei
Huang, Jinsong
author_sort Yuan, Yongbo
collection PubMed
description Organic-inorganic hybrid perovskites (OIHPs) have been demonstrated to be highly successful photovoltaic materials yielding very-high-efficiency solar cells. We report the room temperature observation of an anomalous photovoltaic (APV) effect in lateral structure OIHP devices manifested by the device’s open-circuit voltage (V(OC)) that is much larger than the bandgap of OIHPs. The persistent V(OC) is proportional to the electrode spacing, resembling that of ferroelectric photovoltaic devices. However, the APV effect in OIHP devices is not caused by ferroelectricity. The APV effect can be explained by the formation of tunneling junctions randomly dispersed in the polycrystalline films, which allows the accumulation of photovoltage at a macroscopic level. The formation of internal tunneling junctions as a result of ion migration is visualized with Kelvin probe force microscopy scanning. This observation points out a new avenue for the formation of large and continuously tunable V(OC) without being limited by the materials’ bandgap.
format Online
Article
Text
id pubmed-5357127
institution National Center for Biotechnology Information
language English
publishDate 2017
publisher American Association for the Advancement of Science
record_format MEDLINE/PubMed
spelling pubmed-53571272017-03-24 Anomalous photovoltaic effect in organic-inorganic hybrid perovskite solar cells Yuan, Yongbo Li, Tao Wang, Qi Xing, Jie Gruverman, Alexei Huang, Jinsong Sci Adv Research Articles Organic-inorganic hybrid perovskites (OIHPs) have been demonstrated to be highly successful photovoltaic materials yielding very-high-efficiency solar cells. We report the room temperature observation of an anomalous photovoltaic (APV) effect in lateral structure OIHP devices manifested by the device’s open-circuit voltage (V(OC)) that is much larger than the bandgap of OIHPs. The persistent V(OC) is proportional to the electrode spacing, resembling that of ferroelectric photovoltaic devices. However, the APV effect in OIHP devices is not caused by ferroelectricity. The APV effect can be explained by the formation of tunneling junctions randomly dispersed in the polycrystalline films, which allows the accumulation of photovoltage at a macroscopic level. The formation of internal tunneling junctions as a result of ion migration is visualized with Kelvin probe force microscopy scanning. This observation points out a new avenue for the formation of large and continuously tunable V(OC) without being limited by the materials’ bandgap. American Association for the Advancement of Science 2017-03-17 /pmc/articles/PMC5357127/ /pubmed/28345043 http://dx.doi.org/10.1126/sciadv.1602164 Text en Copyright © 2017, The Authors http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
spellingShingle Research Articles
Yuan, Yongbo
Li, Tao
Wang, Qi
Xing, Jie
Gruverman, Alexei
Huang, Jinsong
Anomalous photovoltaic effect in organic-inorganic hybrid perovskite solar cells
title Anomalous photovoltaic effect in organic-inorganic hybrid perovskite solar cells
title_full Anomalous photovoltaic effect in organic-inorganic hybrid perovskite solar cells
title_fullStr Anomalous photovoltaic effect in organic-inorganic hybrid perovskite solar cells
title_full_unstemmed Anomalous photovoltaic effect in organic-inorganic hybrid perovskite solar cells
title_short Anomalous photovoltaic effect in organic-inorganic hybrid perovskite solar cells
title_sort anomalous photovoltaic effect in organic-inorganic hybrid perovskite solar cells
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5357127/
https://www.ncbi.nlm.nih.gov/pubmed/28345043
http://dx.doi.org/10.1126/sciadv.1602164
work_keys_str_mv AT yuanyongbo anomalousphotovoltaiceffectinorganicinorganichybridperovskitesolarcells
AT litao anomalousphotovoltaiceffectinorganicinorganichybridperovskitesolarcells
AT wangqi anomalousphotovoltaiceffectinorganicinorganichybridperovskitesolarcells
AT xingjie anomalousphotovoltaiceffectinorganicinorganichybridperovskitesolarcells
AT gruvermanalexei anomalousphotovoltaiceffectinorganicinorganichybridperovskitesolarcells
AT huangjinsong anomalousphotovoltaiceffectinorganicinorganichybridperovskitesolarcells