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Gradient Sn-Doped Heteroepitaxial Film of Faceted Rutile TiO2 as an Electron Selective Layer for Efficient Perovskite Solar Cells
Wu, Tingting1,2; Zhen, Chao1; Zhu, Huaze1,2; Wu, Jinbo1,2; Jia, Chunxu1,2; Wang, Lianzhou3,4; Liu, Gang1,2; Park, Nam-Gyu5; Cheng, Hui-Ming1,6
Corresponding AuthorLiu, Gang(gangliu@imr.ac.cn) ; Cheng, Hui-Ming(cheng@imr.ac.cn)
2019-05-29
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Volume11Issue:21Pages:19638-19646
AbstractThe high-efficiency photocarrier collection at the interfaces plays an important role in improving the performance of perovskite solar cells (PSCs) because the photocarrier effective diffusion lengths in the lead halide perovskite absorbers usually surpass the incident depths of light. Developing the electron selective layer (ESL) that has good interfaces with photoactive perovskite and current collector layer-like fluorine-doped tin oxide (FTO) is actively-5. pursued. Here, an unusual dense film of faceted rutile TiO2 single crystals with a gradient of the Sn4+ dopant grown heteroepitaxially on the FTO layer is obtained by a hydrothermal route and subsequent thermal treatment. Owing to the global features including low concentration of defects, atomically smooth coherent interface with FTO, and gradient doping-induced built-in electric field to promote the collection of photoelectrons in it, an optimal PSC with such a film as the ESL exhibits an efficiency of 17.2% with an open-circuit voltage of 1.1 V and fill factor of 76.1%, which are among the highest values of the PSCs with rutile TiO2 films as ESLs.
Keywordheteroepitaxial growth rutile TiO2 gradient Sn doping electron selective layer perovskite solar cell
Funding OrganizationNational Natural Science Foundation of China ; Key Research Program of Frontier Sciences CAS
DOI10.1021/acsami.9b04308
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51825204] ; National Natural Science Foundation of China[51572266] ; National Natural Science Foundation of China[51629201] ; Key Research Program of Frontier Sciences CAS[QYZDB-SSW-JSC039]
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000470034700082
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/133654
Collection中国科学院金属研究所
Corresponding AuthorLiu, Gang; Cheng, Hui-Ming
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
3.Univ Queensland, Sch Chem Engn, Nanomat Ctr, Brisbane, Qld 4072, Australia
4.Univ Queensland, AIBN, Brisbane, Qld 4072, Australia
5.Sungkyunkwan Univ, Sch Chem Engn, Suwon 440746, South Korea
6.Tsinghua Univ, Tsinghua Berkeley Shenzhen Inst, 1001 Xueyuan Rd, Shenzhen 518055, Peoples R China
Recommended Citation
GB/T 7714
Wu, Tingting,Zhen, Chao,Zhu, Huaze,et al. Gradient Sn-Doped Heteroepitaxial Film of Faceted Rutile TiO2 as an Electron Selective Layer for Efficient Perovskite Solar Cells[J]. ACS APPLIED MATERIALS & INTERFACES,2019,11(21):19638-19646.
APA Wu, Tingting.,Zhen, Chao.,Zhu, Huaze.,Wu, Jinbo.,Jia, Chunxu.,...&Cheng, Hui-Ming.(2019).Gradient Sn-Doped Heteroepitaxial Film of Faceted Rutile TiO2 as an Electron Selective Layer for Efficient Perovskite Solar Cells.ACS APPLIED MATERIALS & INTERFACES,11(21),19638-19646.
MLA Wu, Tingting,et al."Gradient Sn-Doped Heteroepitaxial Film of Faceted Rutile TiO2 as an Electron Selective Layer for Efficient Perovskite Solar Cells".ACS APPLIED MATERIALS & INTERFACES 11.21(2019):19638-19646.
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