A universal tactic of using Lewis-base polymer-CNTs composites as additives for high performance cm(2)-sized and flexible perovskite solar cells
文献类型：期刊论文
| 作者 | Liu, Chang; Sun, Jingsong; Jiang, Xiao-Fang; Huang, Like; Lou, Qiang; Cheng, Yi-Bing; Song, Shulin; Ge, Ziyi |
| 刊名 | SCIENCE CHINA-CHEMISTRY
 |
| 出版日期 | 2021 |
| 卷号 | 64期号:2页码:281-292 |
| 关键词 | ORGANOMETAL TRIHALIDE PEROVSKITE MULTIWALLED CARBON NANOTUBES HOLE-TRANSPORTING MATERIAL HIGH-EFFICIENCY ION MIGRATION SOLVENTS IMPACT GROWTH LAYER |
| 英文摘要 | Lewis-base polymers have been widely utilized as additives to act as a template for the perovskite nucleation/crystal growth and passivate the under-coordinated Pb2+ sites. However, it is uncovered in this work that the polymer on the perovskite grain boundaries would significantly hinder the charge transport due to its low conductivity, which brings about free carrier recombination and photocurrent losses. To circumvent this issue while fully exploiting the benefits of polymers in passivating the trap states in perovskite, we incorporate highly conductive multiwall carbon nanotubes (CNTs) with Lewis-base polymers as co-additives in the perovskite film. Functionalizing the CNTs with -COOH group enables a selective hole-extraction and charge transport from perovskite to the hole transporting materials (HTM). By studying the charge transporting and recombination dynamics, we revealed the individual role of the polymer and CNTs in passivating the trap states and facilitating the charge transport, respectively. As a result, the perovskite solar cells (PSCs) with polymer-CNTs composites exhibit an impressive PCE of 21.7% for a small-area device (0.16 cm(2)) and 20.7% for a large-area device (1.0 cm(2)). Moreover, due to the superior mechanical flexibility of both polymer and CNTs, the polymer-CNTs composites incorporation in the perovskite film encourages the fabrication of flexible PSCs (f-PSCs) with an impressive PCE of 18.3%, and a strong mechanical durability by retaining 80% of the initial PCE after 1,000 times bending. In addition, we proved that the selection criteria of the polymers can be extended to other long-chain Lewis-base polymers, which opens new possibilities in design and synthesis of inexpensive material for this tactic towards the fabrication of high performance large-area PSCs and f-PSCs. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22382]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Ge, ZY (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 2.Song, SL |
| 推荐引用方式 GB/T 7714 | Liu, Chang,Sun, Jingsong,Jiang, Xiao-Fang,et al. A universal tactic of using Lewis-base polymer-CNTs composites as additives for high performance cm(2)-sized and flexible perovskite solar cells[J]. SCIENCE CHINA-CHEMISTRY,2021,64(2):281-292. |
| APA | Liu, Chang.,Sun, Jingsong.,Jiang, Xiao-Fang.,Huang, Like.,Lou, Qiang.,...&Ge, Ziyi.(2021).A universal tactic of using Lewis-base polymer-CNTs composites as additives for high performance cm(2)-sized and flexible perovskite solar cells.SCIENCE CHINA-CHEMISTRY,64(2),281-292. |
| MLA | Liu, Chang,et al."A universal tactic of using Lewis-base polymer-CNTs composites as additives for high performance cm(2)-sized and flexible perovskite solar cells".SCIENCE CHINA-CHEMISTRY 64.2(2021):281-292. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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