吡嗪
色素敏化染料
三苯胺
循环伏安法
光化学
介电谱
接受者
化学
能量转换效率
材料科学
光敏剂
电化学
有机太阳能电池
光电子学
有机化学
电极
物理化学
物理
电解质
凝聚态物理
聚合物
作者
Mi‐Ra Kim,Thanh Chung Pham,Yeonghwan Choi,Seah Yang,Hyun‐Seock Yang,Sung‐Min Park,Mijeong Kang,Songyi Lee
出处
期刊:Energies
[MDPI AG]
日期:2022-08-16
卷期号:15 (16): 5938-5938
被引量:2
摘要
Three novel pyrazine-based organic photosensitizers denoted as TPP, TPPS, and TPPF were synthesized for dye-sensitized solar cell (DSSC) studies. Chemical structures of the pyrazine-based photosensitizers were designed with pyrazine derivatives as acceptors, triphenylamine groups as donors, and the thiophene–cyanoacryl group as an auxiliary heterocyclic linkers-acceptor. Using UV-vis spectrophotometry, cyclic voltammetry, and density functional theory calculations, optical and electrochemical characteristics of these pyrazine-based photosensitizers were examined and explored in relation to photovoltaic parameters. The effects of the molecular structures of these photosensitizers on the performances of DSSCs were also investigated. The overall conversion efficiencies of DSSCs based on pyrazine-based photosensitizers were 1.31~2.64% under AM 1.5 irradiation of 100 mW/cm2. To confirm the effect of interfacial charge transfer on photovoltaic performances of DSSC based on pyrazine-based photosensitizers, interfacial charge transfer resistances were investigated by electrical impedance spectroscopy (EIS) measurements.
科研通智能强力驱动
Strongly Powered by AbleSci AI