Efficient Solid-State Electrolytes Based on Aryl-Modified Imidazolium Ionic Crystals for Quantum Dot-Sensitized Solar Cells

被引：4
作者：
Zhao, Guojiao [1 ,2 ]
Wang, Yefeng [1 ,4 ]
Zeng, Jing-Hui [1 ,2 ,5 ,6 ]
Fei, Zhaofu [3 ]
Dyson, Paul J. [3 ]
机构：
[1] Shaanxi Prov Key Lab Macromol Sci, Xian 710119, Peoples R China
[2] Shaanxi Normal Univ, Sch Mat Sci & Engn, Xian 710119, Peoples R China
[3] Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland
[4] Shaanxi Normal Univ, Sch Chem & Chem Engn, Xian 710119, Peoples R China
[5] Shaanxi Key Lab Adv Energy Devices, Xian 710119, Peoples R China
[6] Shaanxi Engn Lab Adv Energy Technol, Xian 710119, Peoples R China
来源：
ACS APPLIED ENERGY MATERIALS | 2021年 / 4卷 / 10期
关键词：
imidazolium salts; organic ionic crystals; solid-state electrolytes; small-molecular materials; hole transport materials; quantum dot-sensitized solar cells; OPEN-CIRCUIT VOLTAGE; HIGHLY EFFICIENT; FILL FACTOR; CONVERSION EFFICIENCY; PERFORMANCE; CONDUCTORS; LIGHT; NANOPARTICLES; ENHANCEMENT; LAYER;
D O I：
10.1021/acsaem.1c01720
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Cost-effective solid-state electrolytes with improved conductivity and device performances have received much research interest in (photo)-electrochemical cells, including solar cells, secondary batteries, and so on. In this work, a series of organic ionic crystals (OICs) containing imidazolium salts modified with bulky fluorenyl and diphenylmethyl substituents and BF4 anions were synthesized and applied into quantum dot-sensitized solar cells (QDSSCs) as the matrix of solid-state electrolytes. The performance of QDSSCs employing these new OICs was evaluated by electrochemical impedance spectroscopy, Tafel plots, and incident monochromatic photon-electron conversion efficiency traces. A champion device applying imidazolium salts with nonplanar diphenylmethyl substituents and BF4 anions afforded a highest power conversion efficiency of 5.69% under AM 1.5 (100 mW.cm(-2)) irradiation.
引用
收藏
页码：10739 / 10747
页数：9
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