Cargando…
Light intensity dependence of organic solar cell operation and dominance switching between Shockley–Read–Hall and bimolecular recombination losses
We investigated the variation of current density–voltage (J–V) characteristics of an organic solar cell (OSC) in the dark and at 9 different light intensities ranging from 0.01 to 1 sun of the AM1.5G spectrum. All three conventional parameters, short-circuit currents (J(sc)), open-circuit voltage (V...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8373965/ https://www.ncbi.nlm.nih.gov/pubmed/34408249 http://dx.doi.org/10.1038/s41598-021-96222-w |
_version_ | 1783740017812701184 |
---|---|
author | Ryu, Shinyoung Ha, Na Young Ahn, Y. H. Park, Ji-Yong Lee, Soonil |
author_facet | Ryu, Shinyoung Ha, Na Young Ahn, Y. H. Park, Ji-Yong Lee, Soonil |
author_sort | Ryu, Shinyoung |
collection | PubMed |
description | We investigated the variation of current density–voltage (J–V) characteristics of an organic solar cell (OSC) in the dark and at 9 different light intensities ranging from 0.01 to 1 sun of the AM1.5G spectrum. All three conventional parameters, short-circuit currents (J(sc)), open-circuit voltage (V(oc)), and Fill factor (FF), representing OSC performance evolved systematically in response to light intensity increase. Unlike J(sc) that showed quasi-linear monotonic increase, V(oc) and FF showed distinctive non-monotonic variations. To elucidate the origin of such variations, we performed extensive simulation studies including Shockley–Read–Hall (SRH) recombination losses. Simulation results were sensitive to defect densities, and simultaneous agreement to 10 measured J–V curves was possible only with the defect density of [Formula: see text] . Based on analyses of simulation results, we were able to separate current losses into SRH- and bimolecular-recombination components and, moreover, identify that the competition between SRH- and bimolecular-loss currents were responsible for the aforementioned variations in J(sc), V(oc), and FF. In particular, we verified that apparent demarcation in V(oc), and FF variations, which seemed to appear at different light intensities, originated from the same mechanism of dominance switching between recombination losses. |
format | Online Article Text |
id | pubmed-8373965 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-83739652021-08-20 Light intensity dependence of organic solar cell operation and dominance switching between Shockley–Read–Hall and bimolecular recombination losses Ryu, Shinyoung Ha, Na Young Ahn, Y. H. Park, Ji-Yong Lee, Soonil Sci Rep Article We investigated the variation of current density–voltage (J–V) characteristics of an organic solar cell (OSC) in the dark and at 9 different light intensities ranging from 0.01 to 1 sun of the AM1.5G spectrum. All three conventional parameters, short-circuit currents (J(sc)), open-circuit voltage (V(oc)), and Fill factor (FF), representing OSC performance evolved systematically in response to light intensity increase. Unlike J(sc) that showed quasi-linear monotonic increase, V(oc) and FF showed distinctive non-monotonic variations. To elucidate the origin of such variations, we performed extensive simulation studies including Shockley–Read–Hall (SRH) recombination losses. Simulation results were sensitive to defect densities, and simultaneous agreement to 10 measured J–V curves was possible only with the defect density of [Formula: see text] . Based on analyses of simulation results, we were able to separate current losses into SRH- and bimolecular-recombination components and, moreover, identify that the competition between SRH- and bimolecular-loss currents were responsible for the aforementioned variations in J(sc), V(oc), and FF. In particular, we verified that apparent demarcation in V(oc), and FF variations, which seemed to appear at different light intensities, originated from the same mechanism of dominance switching between recombination losses. Nature Publishing Group UK 2021-08-18 /pmc/articles/PMC8373965/ /pubmed/34408249 http://dx.doi.org/10.1038/s41598-021-96222-w Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Ryu, Shinyoung Ha, Na Young Ahn, Y. H. Park, Ji-Yong Lee, Soonil Light intensity dependence of organic solar cell operation and dominance switching between Shockley–Read–Hall and bimolecular recombination losses |
title | Light intensity dependence of organic solar cell operation and dominance switching between Shockley–Read–Hall and bimolecular recombination losses |
title_full | Light intensity dependence of organic solar cell operation and dominance switching between Shockley–Read–Hall and bimolecular recombination losses |
title_fullStr | Light intensity dependence of organic solar cell operation and dominance switching between Shockley–Read–Hall and bimolecular recombination losses |
title_full_unstemmed | Light intensity dependence of organic solar cell operation and dominance switching between Shockley–Read–Hall and bimolecular recombination losses |
title_short | Light intensity dependence of organic solar cell operation and dominance switching between Shockley–Read–Hall and bimolecular recombination losses |
title_sort | light intensity dependence of organic solar cell operation and dominance switching between shockley–read–hall and bimolecular recombination losses |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8373965/ https://www.ncbi.nlm.nih.gov/pubmed/34408249 http://dx.doi.org/10.1038/s41598-021-96222-w |
work_keys_str_mv | AT ryushinyoung lightintensitydependenceoforganicsolarcelloperationanddominanceswitchingbetweenshockleyreadhallandbimolecularrecombinationlosses AT hanayoung lightintensitydependenceoforganicsolarcelloperationanddominanceswitchingbetweenshockleyreadhallandbimolecularrecombinationlosses AT ahnyh lightintensitydependenceoforganicsolarcelloperationanddominanceswitchingbetweenshockleyreadhallandbimolecularrecombinationlosses AT parkjiyong lightintensitydependenceoforganicsolarcelloperationanddominanceswitchingbetweenshockleyreadhallandbimolecularrecombinationlosses AT leesoonil lightintensitydependenceoforganicsolarcelloperationanddominanceswitchingbetweenshockleyreadhallandbimolecularrecombinationlosses |