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Red-Carbon-Quantum-Dot-Doped SnO2 Composite with Enhanced Electron Mobility for Efficient and Stable Perovskite Solar Cells
Hui, W; Yang, YG; Xu, Q; Gu, H; Feng, SL; Su, ZH; Zhang, MR; Wang, JO; Li, XD; Fang, JF; Xia, F; Xia, YD; Chen, YH; Gao, XY; Huang, W
2019
Source PublicationADVANCED MATERIALS
ISSN0935-9648
Volume32Issue:4Pages:-
Subtype期刊论文
AbstractAn efficient electron transport layer (ETL) plays a key role in promoting carrier separation and electron extraction in planar perovskite solar cells (PSCs). An effective composite ETL is fabricated using carboxylic-acid- and hydroxyl-rich red-carbon quantum dots (RCQs) to dope low-temperature solution-processed SnO2, which dramatically increases its electron mobility by approximate to 20 times from 9.32 x 10(-4) to 1.73 x 10(-2) cm(2) V-1 s(-1). The mobility achieved is one of the highest reported electron mobilities for modified SnO2. Fabricated planar PSCs based on this novel SnO2 ETL demonstrate an outstanding improvement in efficiency from 19.15% for PSCs without RCQs up to 22.77% and have enhanced long-term stability against humidity, preserving over 95% of the initial efficiency after 1000 h under 40-60% humidity at 25 degrees C. These significant achievements are solely attributed to the excellent electron mobility of the novel ETL, which is also proven to help the passivation of traps/defects at the ETL/perovskite interface and to promote the formation of highly crystallized perovskite, with an enhanced phase purity and uniformity over a large area. These results demonstrate that inexpensive RCQs are simple but excellent additives for producing efficient ETLs in stable high-performance PSCs as well as other perovskite-based optoelectronics.
KeywordTRANSPORTING LAYER PLANAR FILMS HYSTERESIS
DOI10.1002/adma.201906374
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/32183
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Chinese Acad Sci, Shanghai Adv Res Inst, Zhangjiang Lab, Shanghai Synchrotron Radiat Facil, 239 Zhangheng Rd, Shanghai 201204, Peoples R China;
2.Nanjing Tech Univ, NanjingTech, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, Key Lab Flexible Elect KLOFE, Nanjing 211816, Jiangsu, Peoples R China;
3.Nanjing Tech Univ, NanjingTech, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, IAM, Nanjing 211816, Jiangsu, Peoples R China;
4.Chinese Acad Sci, Shanghai Inst Appl Phys, 2019 Jialuo Rd, Shanghai 201800, Peoples R China;
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
6.China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China;
7.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Hui, W,Yang, YG,Xu, Q,et al. Red-Carbon-Quantum-Dot-Doped SnO2 Composite with Enhanced Electron Mobility for Efficient and Stable Perovskite Solar Cells[J]. ADVANCED MATERIALS,2019,32(4):-.
APA Hui, W.,Yang, YG.,Xu, Q.,Gu, H.,Feng, SL.,...&Huang, W.(2019).Red-Carbon-Quantum-Dot-Doped SnO2 Composite with Enhanced Electron Mobility for Efficient and Stable Perovskite Solar Cells.ADVANCED MATERIALS,32(4),-.
MLA Hui, W,et al."Red-Carbon-Quantum-Dot-Doped SnO2 Composite with Enhanced Electron Mobility for Efficient and Stable Perovskite Solar Cells".ADVANCED MATERIALS 32.4(2019):-.
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