High Molar Extinction Coefficient Organic Sensitizers for Efficient Dye-Sensitized Solar Cells

来自 EBSCO

阅读量：

作者：

Hyunbong Choi Dr，Ines Raabe Dr，Duckhyun Kim Dr，F Teocoli，C Kim，Kihyung Song Prof. Dr，Jun-Ho Yum Dr，Jaejung Ko Prof. Dr，Md. K. Nazeeruddin Dr，Michael Grtzel Prof. Dr

展开

摘要：

We have designed and synthesized highly efficient organic sensitizers with a planar thienothiophenevinylenethienothiophene linker. Under standard global AM 1.5 solar conditions, the JK-113-sensitized cell gave a short circuit photocurrent density (Jsc) of 17.61mAcm2, an open-circuit voltage (Voc) of 0.71V, and a fill factor (FF) of 72%, corresponding to an overall conversion efficiency (·) of 9.1%. The incident monochromatic photo-to-current conversion efficiency (IPCE) of JK-113 exceeds 80% over the spectral region from 400 to 640nm, reaching its maximum of 93% at 475nm. The band tails off toward 770nm, contributing to the broad spectral light harvesting. Solar-cell devices based on the sensitizer JK-113 in conjunction with a volatile electrolyte and a solvent-free ionic liquid electrolyte gave high conversion efficiencies of 9.1% and 7.9%, respectively. The JK-113-based solar cell fabricated using a solvent-free ionic liquid electrolyte showed excellent stability under light soaking at 60°C for 1000h.

展开

关键词：

dyes/pigments sensitizers solar cells solid-state electrolytes thienothiopenes

DOI：

10.1002/chem.200902197

被引量：

267

年份：

2010