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Efficient and stable panchromatic squaraine dyes for dye-sensitized solar cells

2011; Royal Society of Chemistry; Volume: 47; Issue: 10 Linguagem: Inglês

10.1039/c0cc05378c

1364-548X

Sanghyun Paek, Hyunbong Choi, Chulwoo Kim, Nara Cho, Seulgi So, Kihyung Song, Mohammad Khaja Nazeeruddin, Jaejung Ko,

Advanced Photocatalysis Techniques

A new series of stable, unsymmetrical squaraine near-IR sensitizers (JK-216 and JK-217), which are assembled using both thiophenyl pyrrolyl and indolium groups, exhibit a panchromatic light harvesting up to 780 nm. The JK-216 based cell exhibited a record efficiency of 6.29% for near-IR DSSCs. In addition, the JK-217 device showed an excellent stability under a light soaking test at 60 °C for 1000 h.