TADF Molecule as an Interfacial Layer with Cascade Energy Alignment Enabling High Open-Circuit Voltage for 3D/2D Perovskite Solar Cells
文献类型：期刊论文
| 作者 | Chen, Xia; Zhang, Jiasen; Liu, Chang; Lou, Qiang; Zheng, KangHui; Yin, Xu; Xie, Lin; Wen, Pan; Liu, Cuirong; Ge, Ziyi |
| 刊名 | ACS APPLIED ENERGY MATERIALS
 |
| 出版日期 | 2021 |
| 卷号 | 4期号:10页码:11112-11120 |
| 关键词 | EFFICIENCY RECOMBINATION LOSSES CATION |
| 英文摘要 | The minimum interface recombination and maximum carrier extraction of perovskite solar cells (PSCs) are important for achieving a better power conversion efficiency (PCE). According to the recent investigations, 3D/2D hybrid perovskite systems have been recognized as an effective approach to improve the efficiency and stability of PSCs. However, a large highest occupied molecular orbital energy level gap between a 2D perovskite and the hole transport layer (HTL) spiro-OMeTAD would cause energy losses at the interface, which limit open-circuit voltage (V-oc) and thus PCE of the PSCs. In this work, we utilized a thermally activated delayed fluorescence molecule M1 stacked on the 3D/2D hybrid perovskite films to engineer the 3D/2D perovskite/HTL interface. The ultrathin interfacial layer of M1 forms a cascade energy alignment between 3D/2D perovskites and a HTL, as a means to circumvent energy losses, which consequently improves the efficiency of PSCs from 19.56 to 21.48% with an outstanding increase of V-oc from 1.18 to 1.23 V. The charge separation and carrier recombination in PSCs were analyzed by photoluminescence and impedance characterization, from which, we deduce that a suitable energy level structure can reduce interface charge recombination and promote a minimal open-circuit voltage (V-oc) loss, which facilitate the improvement of PSC performances. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21459]  |
| 专题 | 2021专题_期刊论文 |
| 作者单位 | 1.Liu, C 2.Ge, ZY (corresponding author), Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China. 3.Ge, ZY (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 4.Liu, CR (corresponding author), Taiyuan Univ Sci & Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Chen, Xia,Zhang, Jiasen,Liu, Chang,et al. TADF Molecule as an Interfacial Layer with Cascade Energy Alignment Enabling High Open-Circuit Voltage for 3D/2D Perovskite Solar Cells[J]. ACS APPLIED ENERGY MATERIALS,2021,4(10):11112-11120. |
| APA | Chen, Xia.,Zhang, Jiasen.,Liu, Chang.,Lou, Qiang.,Zheng, KangHui.,...&Ge, Ziyi.(2021).TADF Molecule as an Interfacial Layer with Cascade Energy Alignment Enabling High Open-Circuit Voltage for 3D/2D Perovskite Solar Cells.ACS APPLIED ENERGY MATERIALS,4(10),11112-11120. |
| MLA | Chen, Xia,et al."TADF Molecule as an Interfacial Layer with Cascade Energy Alignment Enabling High Open-Circuit Voltage for 3D/2D Perovskite Solar Cells".ACS APPLIED ENERGY MATERIALS 4.10(2021):11112-11120. |
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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