HFCAS OpenIR
Interface passivation treatment by halogenated low-dimensional perovskites for high-performance and stable perovskite photovoltaics
Liu, Guozhen1,2; Zheng, Haiying3; Xu, Huifen1,3; Zhang, Liying1,2; Xu, Xiaoxiao1,2; Xu, Shendong1,2; Pan, Xu1
2020-07-01
Source PublicationNANO ENERGY
ISSN2211-2855
Corresponding AuthorZheng, Haiying() ; Pan, Xu(xpan@rntek.cas.cn)
AbstractThe voltage loss which is mainly caused by the nonradiative recombination at the interface has played a serious negative effect on the photovoltaic performance of perovskite solar cells (PSCs). Herein, we firstly designed four halogenated low-dimensional perovskite (LDP) capping layers by the way of employing different benzylammonium-based aromatic cations for high-performance devices. The introduction of halogen functional groups can not only enhance the hydrophobicity but also optimize the photovoltaic characteristics of LDP which play an important role on passivation effect of the interface between perovskite and hole transport materials (HTM) layer. The films with halogenated LDP passivation layers displayed suppressed nonradiative recombination and reduced trap density, leading to significantly reduced voltage loss. As a result, the optimal devices with 4-bromobenzylammonium-based LDP layer achieved the power conversion efficiency (PCE) as high as 21.13% with an enhanced open-circuit voltage (Voc) of 1.14 V. Under the hydrophobic and buffer action of the halogenated LDP layer, the modified devices showed outstanding long-term stability when exposed to moisture, heat and continuous UV irradiation. This work proves the enhanced passivation effect of LDP layer by regulating the chemical property of introduced organic cations for high-performance and stable perovskite photovoltaics.
KeywordPerovskite solar cells Low-dimensional perovskite Passivation effect Halogenated cations Photovoltaic performance
DOI10.1016/j.nanoen.2020.104753
WOS KeywordHIGH-EFFICIENCY ; SOLAR-CELLS ; HYBRID PEROVSKITES ; HALIDE PEROVSKITES ; IODIDE ; ABSORBER ; DESIGN ; FILMS
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFA0202401] ; Colleges and Universities in Shandong Province Science and Technology Projects[J17KA097]
Funding OrganizationNational Key Research and Development Program of China ; Colleges and Universities in Shandong Province Science and Technology Projects
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000560077400012
PublisherELSEVIER
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/92837
Collection中国科学院合肥物质科学研究院
Corresponding AuthorZheng, Haiying; Pan, Xu
Affiliation1.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Appl Technol, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
3.Anhui Univ, Inst Phys Sci & Informat Technol, Hefei 230601, Peoples R China
Recommended Citation
GB/T 7714
Liu, Guozhen,Zheng, Haiying,Xu, Huifen,et al. Interface passivation treatment by halogenated low-dimensional perovskites for high-performance and stable perovskite photovoltaics[J]. NANO ENERGY,2020,73.
APA Liu, Guozhen.,Zheng, Haiying.,Xu, Huifen.,Zhang, Liying.,Xu, Xiaoxiao.,...&Pan, Xu.(2020).Interface passivation treatment by halogenated low-dimensional perovskites for high-performance and stable perovskite photovoltaics.NANO ENERGY,73.
MLA Liu, Guozhen,et al."Interface passivation treatment by halogenated low-dimensional perovskites for high-performance and stable perovskite photovoltaics".NANO ENERGY 73(2020).
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