文献类型：期刊文献

英文题名：D-pi-D type fluorescent compounds based on dehydroabietic acid triarylamine: Synthesis, photophysical properties and application as hole-transporting materials in perovskite solar cells

作者：Gao, Yanan[1,2,3,4,5] Dou, Liwei[1,2,3,4,5] Gao, Hong[1,2,3,4,5] Song, Jie[6] Shang, Shibin[1,2,3,4,5] Song, Zhanqian[1,2,3,4,5]

第一作者：Gao, Yanan

通信作者：Gao, H[1];Song, J[2]|[a0005b559a5719e58df5b]高宏;

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Beijing, Peoples R China;[2]Key Lab Biomass Energy & Mat, Nanjing, Jiangsu, Peoples R China;[3]Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing, Jiangsu, Peoples R China;[4]State Forestry & Grassland Adm, Key Lab Forest Chem Engn, Beijing, Peoples R China;[5]Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Peoples R China;[6]Univ Michigan, Dept Chem & Biochem, 303E Kearsley St, Flint, MI 48502 USA

年份：2021

卷号：192

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：20212110403412);Scopus(收录号：2-s2.0-85106225969);WOS:【SCI-EXPANDED(收录号:WOS:000660302400006)】；

基金：We are grateful for financial support from the National Natural Science Foundation of China (grants 31670576) .

语种：英文

外文关键词：Dehydroabietic acid triarylamine; Carbazole; D-pi-D; Hole-transporting material; Perovskite solar cells

摘要：D-pi-D hole-transporting materials have the potential to be excellent dopant-free hole-transporting materials (HTMs) for perovskite solar cells (PSCs) because of their tunable energy levels, high charge mobility, good solubility, and excellent film-forming properties. In this paper, two series of D-pi-D type compounds, Series 1 (2TPA-CZ1 similar to 2TPA-CZ3) and Series 2 (2DTPA-CZ1 similar to 2DTPA-CZ3), were synthesized by linking a carbazole derivative (as a pi-bridge) to triaryamine or dehydroabietic acid triarylamine groups (the donor groups) via C-C coupling reactions. The optical, electrochemical, thermal, and photovoltaic properties in PSCs of these compounds were fully investigated. The two series of compounds exhibit good ultraviolet absorption, fluorescence emission, and electrochemical and thermal properties. In addition, their highest occupied molecular orbital levels and energy gaps make them suitable for use as hole-transporting materials in PSCs. Among the PSCs developed, Device 1, based on 2TPA-CZ1, showed the best performance, with a power conversion efficiency (PCE) of 12.27%, a open circuit voltage (V-OC) of 1.13 V, a short-circuit photocurrent density (J(SC)) of 15.10 mA cm(-2), and a fill factor (FF) of 71.61%, which is comparable to that of a device based on the conventional hole transporting material Spiro-OMeTAD. While the PCE of Devices 4-6 was lower than the PCE of Devices 1-3, Devices 4-6 exhibit better stability. This may be due to the higher T-g and better film-forming properties of compounds formed using the dehydroabietic acid skeleton. In additional, the introduction of alkyl groups on the carbazole moiety decreased the efficiency of the PSC devices. These results demonstrate that the 2TPA-CZ1 compounds are promising HTMs for PSC applications.