Abstract α-CrOOH was firstly explored as a passivation material for p-type dye-sensitized solar cell based on 3R-CuCrO2 delafossite and its beneficial effect on photovoltaic performance of p-type DSSC was demonstrated. α-CrOOH nanomaterial was obtained by a simple hydrothermal method using strong acid solution. The n-type α-CrOOH passivation of the p-type 3R-CuCrO2 film has provided a doubling of JSC and a threefold increase in the VOC compared to the pure 3R-CuCrO2 photocathode in DSSC. This remarkable enhancement could be explained in that α-CrOOH layer acts as a barrier layer for charge recombination between the holes in the valence band and the electrolyte or dye. In addition, formed p-n junction would facilitate the charge separation. Therefore, the α-CrOOH is proposed as a promising material to modify the photocathode of p-type DSSC with excellent photovoltaic efficiency.

中文翻译：

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CrOOH作为染料敏化太阳能电池的高性能表面钝化材料

摘要 α-CrOOH 作为基于 3R-CuCrO2 铜铁矿的 p 型染料敏化太阳能电池的钝化材料首次被探索，并证明了其对 p 型 DSSC 光伏性能的有益影响。α-CrOOH纳米材料是通过使用强酸溶液的简单水热法获得的。与 DSSC 中纯 3R-CuCrO2 光电阴极相比，p 型 3R-CuCrO2 薄膜的 n 型 α-CrOOH 钝化提供了两倍的 JSC 和三倍的 VOC 增加。这种显着的增强可以解释为 α-CrOOH 层充当价带中的空穴与电解质或染料之间电荷复合的阻挡层。此外，形成的 pn 结将有助于电荷分离。所以，