Achieving High Open-Circuit Voltages up to 1.57 V in Hole-Transport-Material-Free MAPbBr(3) Solar Cells with Carbon Electrodes
文献类型：期刊论文
| 作者 | Liang, Yongqi1; Wang, Yajuan1; Mu, Cheng2; Wang, Sen1; Wang, Xinnan3; Xu, Dongsheng2; Sun, Licheng1,4 |
| 刊名 | ADVANCED ENERGY MATERIALS
 |
| 出版日期 | 2018-02-05 |
| 卷号 | 8期号:4 |
| 关键词 | Band Alignment Carbon Electrodes Hybrid Solar Cells Open-circuit Voltage Radiative Limit |
| ISSN号 | 1614-6832 |
| DOI | 10.1002/aenm.201701159 |
| 英文摘要 | An open-circuit voltage (V-oc) of 1.57 V under simulated AM1.5 sunlight in planar MAPbBr(3) solar cells with carbon (graphite) electrodes is obtained. The hole-transport-material-free MAPbBr(3) solar cells with the normal architecture (FTO/TiO2/MAPbBr(3)/carbon) show little hysteresis during current-voltage sweep under simulated AM1.5 sunlight. A solar-to-electricity power conversion efficiency of 8.70% is achieved with the champion device. Accordingly, it is proposed that the carbon electrodes are effective to extract photogenerated holes in MAPbBr(3) solar cells, and the industry-applicable carbon electrodes will not limit the performance of bromide-based perovskite solar cells. Based on the analysis of the band alignment, it is found that the voltage (energy) loss across the interface between MAPbBr(3) and carbon is very small compared to the offset between the valence band maximum of MAPbBr(3) and the work function of graphite. This finding implies either Fermi level pinning or highly doped region inside MAPbBr(3) layer exists. The band-edge electroluminescence spectra of MAPbBr(3) from the solar cells further support no back-transfer pathways of electrons across the MAPbBr(3)/TiO2 interface. |
| 语种 | 英语 |
| WOS记录号 | WOS:000424152200002 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/45533]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Liang, Yongqi; Xu, Dongsheng; Sun, Licheng |
| 作者单位 | 1.Dalian Univ Technol, DUT KTH Joint Educ & Res Ctr Mol Devices, Inst Artificial Photosynth, State Key Lab Fine Chem, Dalian 116024, Peoples R China 2.Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100871, Peoples R China 3.Dalian Univ Technol, Sch Chem Engn, Dalian 116024, Peoples R China 4.KTH Royal Inst Technol, Sch Chem Sci & Engn, Dept Chem, S-10044 Stockholm, Sweden |
| 推荐引用方式 GB/T 7714 | Liang, Yongqi,Wang, Yajuan,Mu, Cheng,et al. Achieving High Open-Circuit Voltages up to 1.57 V in Hole-Transport-Material-Free MAPbBr(3) Solar Cells with Carbon Electrodes[J]. ADVANCED ENERGY MATERIALS,2018,8(4). |
| APA | Liang, Yongqi.,Wang, Yajuan.,Mu, Cheng.,Wang, Sen.,Wang, Xinnan.,...&Sun, Licheng.(2018).Achieving High Open-Circuit Voltages up to 1.57 V in Hole-Transport-Material-Free MAPbBr(3) Solar Cells with Carbon Electrodes.ADVANCED ENERGY MATERIALS,8(4). |
| MLA | Liang, Yongqi,et al."Achieving High Open-Circuit Voltages up to 1.57 V in Hole-Transport-Material-Free MAPbBr(3) Solar Cells with Carbon Electrodes".ADVANCED ENERGY MATERIALS 8.4(2018). |
入库方式： OAI收割
来源：化学研究所
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