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Bulk-Heterojunction Thin-Film Solar Cells Utilizing Miscible Binary Donor Materials of Liquid Crystalline Phthalocyanine and its Analogue

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, , Citation Kento Fujita et al 2017 J. Phys.: Conf. Ser. 924 012003 DOI 10.1088/1742-6596/924/1/012003

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afujii@eei.eng.osaka-u.ac.jp

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1 Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan

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1742-6596/924/1/012003

Abstract

Small-molecule bulk-heterojunction solar cells utilizing a binary-blended donor material composed of a liquid crystalline phthalocyanine and its analogue have been studied. The short-circuit current density (Jsc) and power conversion efficiency (PCE) of the solar cells utilizing the blended donor material with an optimized blend ratio reached 11.6 mA/cm2 and 4.8%, respectively, which were superior to those of organic solar cells utilizing each donor material. The improvement of Jsc and PCE has been discussed from the viewpoints of the crystal structure, optical and carrier transport properties of the blended donor material.

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10.1088/1742-6596/924/1/012003