| 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 Author | Liu, Gang(gangliu@imr.ac.cn) ; Cheng, Hui-Ming(cheng@imr.ac.cn) |
| 2019-05-29 | |
| Source Publication | ACS APPLIED MATERIALS & INTERFACES
 |
| ISSN | 1944-8244 |
| Volume | 11Issue:21Pages:19638-19646 |
| Abstract | The 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. |
| Keyword | heteroepitaxial growth rutile TiO2 gradient Sn doping electron selective layer perovskite solar cell |
| Funding Organization | National Natural Science Foundation of China ; Key Research Program of Frontier Sciences CAS |
| DOI | 10.1021/acsami.9b04308 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National 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 Area | Science & Technology - Other Topics ; Materials Science |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000470034700082 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/133654 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Gang; Cheng, Hui-Ming |
| Affiliation | 1.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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