Near-Ultraviolet Light-Driven Photocathodic Activity for (001)-Oriented BiOCl Thin Films Synthesized by Mist Chemical Vapor Deposition,Inorganic Chemistry

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Near-Ultraviolet Light-Driven Photocathodic Activity for (001)-Oriented BiOCl Thin Films Synthesized by Mist Chemical Vapor Deposition
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2023-05-31 , DOI: 10.1021/acs.inorgchem.3c00466
Zaichun Sun _{1,

2} , Shaoyong Qin ₃ , Daichi Oka _{2,

4} , Huijuan Zhang ₅ , Tomoteru Fukumura _{2,

6} , Yuji Matsumoto ₇ , Bingchu Mei ₁

Affiliation

Semitransparent and homogeneous bismuth oxychloride (BiOCl) thin films with (001) preferred orientation were synthesized on polycrystalline Sn:In₂O₃-glass substrates by mist chemical vapor deposition. The films showed photocathodic activity even under near-ultraviolet light within the band gap due to the in-gap states induced by oxygen vacancies. Higher synthesis temperatures resulted in a significant increase of photocurrent density under ultraviolet light. While the longer lifetime of photocarriers led to an increase of internal quantum efficiency, the larger band-edge absorption significantly contributed to the higher external quantum efficiency.

中文翻译：

雾化学气相沉积法制备 (001) 取向 BiOCl 薄膜的近紫外光驱动光电阴极活性

_{通过雾化化学气相沉积在多晶 Sn:In 2} O ₃玻璃基板上合成具有 (001) 择优取向的半透明且均匀的氯氧化铋 (BiOCl) 薄膜。由于氧空位引起的带隙状态，即使在带隙内的近紫外光下，薄膜也显示出光电阴极活性。较高的合成温度导致紫外光下的光电流密度显着增加。虽然较长的光载流子寿命导致内部量子效率增加，但较大的带边吸收显着促进了较高的外部量子效率。

更新日期：2023-05-31

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