J-aggregation induced low bandgap anthracene-based conjugated molecule for solution-processed solar cells

Jicheol Shin; Nam Su Kang; Kyung Hwan Kim; Tae Wan Lee; Jung-Il Jin; Minsik Kim; Kwangyeol Lee; Byeong Kwon Ju; Jae-Min Hong; Dong Hoon Choi

doi:10.1039/C2CC34109C

J-aggregation induced low bandgap anthracene-based conjugated molecule for solution-processed solar cells†

Jicheol Shin,^a Nam Su Kang,^bc Kyung Hwan Kim,^a Tae Wan Lee,^a Jung-Il Jin,^a Minsik Kim,^a Kwangyeol Lee,^a Byeong Kwon Ju,^b Jae-Min Hong^c and Dong Hoon Choi*^a

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^a Department of Chemistry, College of Science, Research Institute for Natural Sciences, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea
E-mail: dhchoi8803@korea.ac.kr
Fax: +82-2-924-3141
Tel: +82-2-3290-3140

^b Display and Nanosystem Laboratory, College of Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea

^c Future Convergence Research Division, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 130-650, Republic of Korea

Abstract

A new anthracene-based X-shaped conjugated molecule, HBTATHT, was synthesized. Thin film transistors based on unannealed HBTATHT showed a carrier mobility of 0.15 cm² V⁻¹ s⁻¹ (I_on/off = 7.9 × 10⁶). Further, a solution processed solar cell made of HBTATHT exhibited promising power conversion efficiencies of 4.84% and 4.70% with PC₆₁BM (1 : 0.8 wt ratio) and PC₇₁BM (1 : 0.6 wt ratio), respectively.

Chemical Communications

J-aggregation induced low bandgap anthracene-based conjugated molecule for solution-processed solar cells†

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