Naphthodithiophene-2, 1, 3-benzothiadiazole copolymers for bulk heterojunction solar cells

B Wang, SW Tsang, W Zhang, Y Tao…

Index: Wang, Bao; Tsang, Sai-Wing; Zhang, Weifeng; Tao, Ye; Wong, Man Shing Chemical Communications, 2011 , vol. 47, # 33 p. 9471 - 9473

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Citation Number: 42

Abstract

Two newly synthesized naphthodithiophene-based copolymers, PNB, exhibit a low optical bandgap of∼ 1.64 eV with which the solar cells fabricated from the blend of PNB and PC71BM afforded a power conversion efficiency of 5.3% with external quantum efficiency over 60% in a broad spectral range.