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