[17p-PB06-1~3] 13.6 ナノ構造・量子現象・ナノ量子デバイス

▲ [17p-PB06-1] Passivation on ZnO NWs to enhance the efficiency of PbS/ZnO NW QDSCs

〇(D)YUYAO WEI¹、Chao Ding¹、Mako Nakamura¹、Shuzi Hayase¹、Qing Shen¹ (1.Faculty of Informatics and Engineering, The University of Electro- Communications)

キーワード：ZnO Nanowires, passivation

In this work, the effect of passivation with inorganic Mg-doped ZnO (ZMO), organic 1,2-ethanedithiol (EDT) and both of them on ZnO NWs and PbS QDSCs are investigated. As a result, ZnO NWs purely passivated by organic material EDT show the best performance with less surface defects and better matched energy level with PbS layer. A nearly double power conversion efficiency (PCE) of 6.9% is achieved for the solar device using ZnO NW @ EDT, compared with that (4.1%) of the untreated one. The work provides a promising way to impede interlayer charge recombination and facilitate carrier transport, thus enhance the photovoltaic performance of the device.