Structure-photovoltaic performance relationships for DSSC sensitizers having heterocyclic and benzene spacers

被引：22

作者：

Kim, Bo Hyung ^{[1
]}

Freeman, Harold S. ^{[1
]}

机构：

[1] N Carolina State Univ, Fiber & Polymer Sci Program, Raleigh, NC 27695 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 38期

关键词：

DENSITY-FUNCTIONAL THEORY; OPEN-CIRCUIT VOLTAGE; CHARGE-TRANSFER; SOLAR-CELLS; ORGANIC-DYE; CONVERSION-EFFICIENCY; ELECTRON INJECTION; SPECTRAL SHIFTS; TIO2; ACCEPTOR;

D O I：

10.1039/c2jm33228k

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：

Five new sensitizers based on different spacer groups were designed and synthesized in order to facilitate investigation of the effects of heterocyclic spacers on photovoltaic parameters in DSSCs. It was found that generic issues arising from the electronic nature of heterocyclic units affected voltage parameters, with DP-P giving the highest voltage. On the other hand, higher electron transfer yield across a wide range of the solar spectrum played an important role in enhanced current densities. Best performance was achieved by the thiophene based sensitizer DP-T, resulting in an efficiency of 3.5% with J(sc) = 8.19 mA cm(-2), V-oc = 0.618 V, ff = 0.697.

引用

页码：20403 / 20409

页数：7

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