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Efficient, symmetric oligomer hole transporting materials with different cores for high performance perovskite solar
Hyeju Choi1, Sojin Park, Moon-Sung Kang
1Department of Advanced Material Chemistry, Korea University Sejong Campus, Sejong-ro 2511, Sejong City 339-700, Republic of Korea. jko@korea.ac.kr.
Abstract:
Novel symmetric oligomer hole transporting materials (HTMs) incorporating 3,4-ethylenedioxythiophene (EDOT) and 2,1,3-benzothiadiazole (BTD) cores have been synthesized and tested for high performance perovskite solar cells. A maximum energy conversion efficiency of 14.23% has been achieved by employing with the electron donating EDOT unit as the core, which is comparable to that of the traditional (14.55%).

