CuBi2O4 光阴极中阳离子空位介导的超快空穴传输。

IF 7.5 2区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

ChemSusChem Pub Date : 2024-11-06 DOI:10.1002/cssc.202401345

Emir Ardalı, Hadi Jahangiri, Navid Solati, Ugur Yahsi, Cumali Tav, Alphan Sennaroglu, Sarp Kaya

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引用次数: 0

摘要

本研究通过改变 CuBi2O4（CBO）光电阴极的原子成分并操纵其 p 型特性，研究了其价带空穴态的超快传输动力学。该研究结合了原位和非原位瞬态吸收光谱实验以及光电化学（PEC）性能测试，是对经过成分处理的 CBO 进行的一次全面的超快光学瞬态吸收光谱（TAS）研究，揭示了阳离子空位处价带（VB）空穴的极子形成趋势。因此，它描绘了超快空穴传输动力学的全貌，并为了解 CBO 中产生的光电流的阻碍因素提供了宝贵的见解。

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Cation Vacancy-Mediated Ultrafast Hole Transport in CuBi2O4 Photocathodes.

In this study, the ultrafast transport dynamics of the valence band hole states in CuBi2O4 (CBO) photocathodes were investigated by varying the atomic composition and manipulating their p-type character. As a comprehensive ultrafast optical transient absorption spectroscopy (TAS) investigation of compositionally manipulated CBO that combines both ex situ and in situ TAS experiments with photoelectrochemical (PEC) performance tests, the study reveals the polaron formation tendencies of the valence band (VB) holes at cationic vacancy sites. Therefore, it draws a complete picture of the ultrafast hole transport dynamics and provides valuable insights into the hindrance of the photocurrent generated in CBO.

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来源期刊

ChemSusChem 化学-化学综合

CiteScore

15.80

自引率

4.80%

发文量

555

审稿时长

1.8 months

期刊介绍： ChemSusChem Impact Factor (2016): 7.226 Scope: Interdisciplinary journal Focuses on research at the interface of chemistry and sustainability Features the best research on sustainability and energy Areas Covered: Chemistry Materials Science Chemical Engineering Biotechnology