Influence of tagging thiophene bridge unit on optical and electrochemical properties of coumarin based dyes for DSSCs with theoretical insight

被引：35

作者：

Dhar, Abhishek ^{[1
]}

Kumar, Nadavala Siva ^{[2
]}

Paul, Pabitra Kumar ^{[3
]}

Roy, Subhasis ^{[4
]}

Vekariya, Rohit L. ^{[5
,6
]}

机构：

[1] Univ Calcutta, Dept Chem Technol, 92 Acharya Prafulla Chandra Rd, Kolkata 700009, India

[2] King Saud Univ, Dept Chem Engn, POB 800, Riyadh 11421, Saudi Arabia

[3] Jadavpur Univ, Dept Phys, Kolkata 700032, India

[4] Univ Calcutta, Rajabazar Sci Coll, Dept Chem Engn, Kolkata 700009, India

[5] Ton Duc Thang Univ, Dept Management Sci & Technol Dev, Ho Chi Minh City, Vietnam

[6] Ton Duc Thang Univ, Fac Sci Appl, Ho Chi Minh City, Vietnam

来源：

ORGANIC ELECTRONICS | 2018年 / 53卷

关键词：

Thiophene bridge; Coumarin; High efficiency; Dye sensitized solar cell; SENSITIZED SOLAR-CELLS; ORGANIC-DYES; PHOTOVOLTAIC PERFORMANCE; ELECTRON INJECTION; MOLECULAR DESIGN; PHENOTHIAZINE; EFFICIENCY; IMPEDANCE; DYNAMICS;

D O I：

10.1016/j.orgel.2017.12.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel series of coumarin based dyes were designed and synthesised with coumarin donor (D) moiety, various thiophene bridge (Th-pi) unit and -CNCHCOOH acceptor (A). The dye sensitized solar cells' (DSSCs) performance, optical and electrochemical properties of coumarin dyes were examined systematically. Moreover, optimization calculations for the geometries of all the coumarin dyes with various Th-bridge units were studied by DFT (density functional theory). CDT-3 dye containing three Th-unit shows the highest short circuit current (J(sc) = 15.14 mA/cm(2)) and efficiency is 6.02% under 1 sunlight (100 mW/cm(2), AM1.5) illumination. The DSSCs devices with all three coumarin dyes exhibit good, long term stability up to 500hr.

引用

页码：280 / 286

页数：7

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