Jeong Seonghwa, Seo Seongrok, Shin Hyunjung
Department of Energy Science, Sungkyunkwan University Suwon Korea
RSC Adv. 2018 Aug 6;8(49):27956-27962. doi: 10.1039/c8ra02556h. eCollection 2018 Aug 2.
CuCrO with a crystal structure of delafossite is a promising material as a transparent conducting oxide. It shows unique properties, for example, wide band gap, good chemical stability, and p-type carrier transporting character. The oxide layers with delafossite structure have been suggested as hole transporting materials for organic-inorganic CHNHPbI perovskite solar cells. In this study, we fabricated inverted (p-i-n) type planar perovskite solar cells with CuCrO nanoparticles synthesized by the hydrothermal method and their films were formed by spin-coating without any further heat treatment. The champion device gave a 13.1% of power conversion efficiency and CuCrO based devices show improved stability in ambient air compared with the standard PEDOT:PSS based perovskite solar cells.
具有铜铁矿晶体结构的CuCrO是一种很有前途的透明导电氧化物材料。它具有独特的性能，例如宽带隙、良好的化学稳定性和p型载流子传输特性。具有铜铁矿结构的氧化层已被建议用作有机-无机CHNHPbI钙钛矿太阳能电池的空穴传输材料。在本研究中，我们制备了倒置（p-i-n）型平面钙钛矿太阳能电池，其CuCrO纳米颗粒通过水热法合成，其薄膜通过旋涂形成，无需进一步热处理。最佳器件的功率转换效率为13.1%，与基于标准PEDOT:PSS的钙钛矿太阳能电池相比，基于CuCrO的器件在环境空气中表现出更高的稳定性。
