Cargando…
Strain engineering in perovskite solar cells and its impacts on carrier dynamics
The mixed halide perovskites have emerged as outstanding light absorbers for efficient solar cells. Unfortunately, it reveals inhomogeneity in these polycrystalline films due to composition separation, which leads to local lattice mismatches and emergent residual strains consequently. Thus far, the...
Autores principales: | , , , , , , , , , , , , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6379394/ https://www.ncbi.nlm.nih.gov/pubmed/30778061 http://dx.doi.org/10.1038/s41467-019-08507-4 |
_version_ | 1783396074583490560 |
---|---|
author | Zhu, Cheng Niu, Xiuxiu Fu, Yuhao Li, Nengxu Hu, Chen Chen, Yihua He, Xin Na, Guangren Liu, Pengfei Zai, Huachao Ge, Yang Lu, Yue Ke, Xiaoxing Bai, Yang Yang, Shihe Chen, Pengwan Li, Yujing Sui, Manling Zhang, Lijun Zhou, Huanping Chen, Qi |
author_facet | Zhu, Cheng Niu, Xiuxiu Fu, Yuhao Li, Nengxu Hu, Chen Chen, Yihua He, Xin Na, Guangren Liu, Pengfei Zai, Huachao Ge, Yang Lu, Yue Ke, Xiaoxing Bai, Yang Yang, Shihe Chen, Pengwan Li, Yujing Sui, Manling Zhang, Lijun Zhou, Huanping Chen, Qi |
author_sort | Zhu, Cheng |
collection | PubMed |
description | The mixed halide perovskites have emerged as outstanding light absorbers for efficient solar cells. Unfortunately, it reveals inhomogeneity in these polycrystalline films due to composition separation, which leads to local lattice mismatches and emergent residual strains consequently. Thus far, the understanding of these residual strains and their effects on photovoltaic device performance is absent. Herein we study the evolution of residual strain over the films by depth-dependent grazing incident X-ray diffraction measurements. We identify the gradient distribution of in-plane strain component perpendicular to the substrate. Moreover, we reveal its impacts on the carrier dynamics over corresponding solar cells, which is stemmed from the strain induced energy bands bending of the perovskite absorber as indicated by first-principles calculations. Eventually, we modulate the status of residual strains in a controllable manner, which leads to enhanced PCEs up to 20.7% (certified) in devices via rational strain engineering. |
format | Online Article Text |
id | pubmed-6379394 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-63793942019-02-21 Strain engineering in perovskite solar cells and its impacts on carrier dynamics Zhu, Cheng Niu, Xiuxiu Fu, Yuhao Li, Nengxu Hu, Chen Chen, Yihua He, Xin Na, Guangren Liu, Pengfei Zai, Huachao Ge, Yang Lu, Yue Ke, Xiaoxing Bai, Yang Yang, Shihe Chen, Pengwan Li, Yujing Sui, Manling Zhang, Lijun Zhou, Huanping Chen, Qi Nat Commun Article The mixed halide perovskites have emerged as outstanding light absorbers for efficient solar cells. Unfortunately, it reveals inhomogeneity in these polycrystalline films due to composition separation, which leads to local lattice mismatches and emergent residual strains consequently. Thus far, the understanding of these residual strains and their effects on photovoltaic device performance is absent. Herein we study the evolution of residual strain over the films by depth-dependent grazing incident X-ray diffraction measurements. We identify the gradient distribution of in-plane strain component perpendicular to the substrate. Moreover, we reveal its impacts on the carrier dynamics over corresponding solar cells, which is stemmed from the strain induced energy bands bending of the perovskite absorber as indicated by first-principles calculations. Eventually, we modulate the status of residual strains in a controllable manner, which leads to enhanced PCEs up to 20.7% (certified) in devices via rational strain engineering. Nature Publishing Group UK 2019-02-18 /pmc/articles/PMC6379394/ /pubmed/30778061 http://dx.doi.org/10.1038/s41467-019-08507-4 Text en © The Author(s) 2019 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Zhu, Cheng Niu, Xiuxiu Fu, Yuhao Li, Nengxu Hu, Chen Chen, Yihua He, Xin Na, Guangren Liu, Pengfei Zai, Huachao Ge, Yang Lu, Yue Ke, Xiaoxing Bai, Yang Yang, Shihe Chen, Pengwan Li, Yujing Sui, Manling Zhang, Lijun Zhou, Huanping Chen, Qi Strain engineering in perovskite solar cells and its impacts on carrier dynamics |
title | Strain engineering in perovskite solar cells and its impacts on carrier dynamics |
title_full | Strain engineering in perovskite solar cells and its impacts on carrier dynamics |
title_fullStr | Strain engineering in perovskite solar cells and its impacts on carrier dynamics |
title_full_unstemmed | Strain engineering in perovskite solar cells and its impacts on carrier dynamics |
title_short | Strain engineering in perovskite solar cells and its impacts on carrier dynamics |
title_sort | strain engineering in perovskite solar cells and its impacts on carrier dynamics |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6379394/ https://www.ncbi.nlm.nih.gov/pubmed/30778061 http://dx.doi.org/10.1038/s41467-019-08507-4 |
work_keys_str_mv | AT zhucheng strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT niuxiuxiu strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT fuyuhao strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT linengxu strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT huchen strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT chenyihua strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT hexin strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT naguangren strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT liupengfei strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT zaihuachao strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT geyang strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT luyue strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT kexiaoxing strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT baiyang strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT yangshihe strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT chenpengwan strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT liyujing strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT suimanling strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT zhanglijun strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT zhouhuanping strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics AT chenqi strainengineeringinperovskitesolarcellsanditsimpactsoncarrierdynamics |