【摘要】 硒化铜（Cu_xSe）凭借优良的电催化活性和较低的电荷转移电阻,在量子点敏化太阳电池（QDSSC）对电极方面表现出了巨大的潜力.本研究采用一种新的离子交换方法制备了Cu₃Se₂纳米片阵列.通过溅射沉积CdS层作为模板,在化学浴中生长出均匀和高覆盖度的Cu₃Se₂薄膜,Cu₃Se₂纳米片的形貌和厚度由沉积时间控制,最终产物（2h-Cu₃Se₂）显著改善了电化学催化活性和载流子传输性能,相比较于CuS为对电极的CdS/CdSe量子点敏化太阳能电池,其光伏性能由3.21%提升至4.01%.更多还原

【Abstract】 Copper selenide（Cu_xSe） has great potential as counter electrode for quantum dots sensitized solar cell（QDSSC） due to its excellent electrocatalytic activity and lower charge transfer resistance. A novel ion exchange method has been utilized to fabricate Cu₃Se₂ nanosheets array counter electrode. CdS layer was first deposited by sputtering and used as a template to grow compact and uniform Cu₃Se₂ film in a typical chemical bath. The morphology and thickness of the Cu₃Se₂ nanosheets were controlled by the deposition time. The final products（2h-Cu₃Se₂） showed significantly improved electrochemical catalytic activity and carrier transport property, leading to a much increased power conversion efficiency（4.01%） when compared with the CuS counter electrode CdS/CdSe QDSSC（3.21%）.更多还原