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Potential Dip in Organic Photovoltaics Probed by Cross-sectional Kelvin Probe Force Microscopy
Cross-sectional potential distribution of high open-circuit voltage bulk heterojunction photovoltaic device was measured using Kelvin probe force microscopy. Potential drop confined at cathode interface implies that photo-active layer is an effective p-type semiconductor. Potential values in field-f...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer US
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6070447/ https://www.ncbi.nlm.nih.gov/pubmed/30069714 http://dx.doi.org/10.1186/s11671-018-2639-6 |
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author | Lee, Jongjin Kong, Jaemin |
author_facet | Lee, Jongjin Kong, Jaemin |
author_sort | Lee, Jongjin |
collection | PubMed |
description | Cross-sectional potential distribution of high open-circuit voltage bulk heterojunction photovoltaic device was measured using Kelvin probe force microscopy. Potential drop confined at cathode interface implies that photo-active layer is an effective p-type semiconductor. Potential values in field-free region show wide variation according to log-normal distribution. This potential dip prone to have holes captured during the diffusive motion, which can increase bimolecular recombination, while potential gradient in depletion region makes this potential dip smaller and the captured holes easily escape from dip region by Schottky barrier lowering. |
format | Online Article Text |
id | pubmed-6070447 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Springer US |
record_format | MEDLINE/PubMed |
spelling | pubmed-60704472018-08-20 Potential Dip in Organic Photovoltaics Probed by Cross-sectional Kelvin Probe Force Microscopy Lee, Jongjin Kong, Jaemin Nanoscale Res Lett Nano Express Cross-sectional potential distribution of high open-circuit voltage bulk heterojunction photovoltaic device was measured using Kelvin probe force microscopy. Potential drop confined at cathode interface implies that photo-active layer is an effective p-type semiconductor. Potential values in field-free region show wide variation according to log-normal distribution. This potential dip prone to have holes captured during the diffusive motion, which can increase bimolecular recombination, while potential gradient in depletion region makes this potential dip smaller and the captured holes easily escape from dip region by Schottky barrier lowering. Springer US 2018-08-01 /pmc/articles/PMC6070447/ /pubmed/30069714 http://dx.doi.org/10.1186/s11671-018-2639-6 Text en © The Author(s). 2018 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
spellingShingle | Nano Express Lee, Jongjin Kong, Jaemin Potential Dip in Organic Photovoltaics Probed by Cross-sectional Kelvin Probe Force Microscopy |
title | Potential Dip in Organic Photovoltaics Probed by Cross-sectional Kelvin Probe Force Microscopy |
title_full | Potential Dip in Organic Photovoltaics Probed by Cross-sectional Kelvin Probe Force Microscopy |
title_fullStr | Potential Dip in Organic Photovoltaics Probed by Cross-sectional Kelvin Probe Force Microscopy |
title_full_unstemmed | Potential Dip in Organic Photovoltaics Probed by Cross-sectional Kelvin Probe Force Microscopy |
title_short | Potential Dip in Organic Photovoltaics Probed by Cross-sectional Kelvin Probe Force Microscopy |
title_sort | potential dip in organic photovoltaics probed by cross-sectional kelvin probe force microscopy |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6070447/ https://www.ncbi.nlm.nih.gov/pubmed/30069714 http://dx.doi.org/10.1186/s11671-018-2639-6 |
work_keys_str_mv | AT leejongjin potentialdipinorganicphotovoltaicsprobedbycrosssectionalkelvinprobeforcemicroscopy AT kongjaemin potentialdipinorganicphotovoltaicsprobedbycrosssectionalkelvinprobeforcemicroscopy |