Fermi Level Pinning in Concentrated Light-Induced Band Edge Tuning Maximizes Photocatalytic Solar-to-Hydrogen Efficiency,The Journal of Physical Chemistry Letters

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Fermi Level Pinning in Concentrated Light-Induced Band Edge Tuning Maximizes Photocatalytic Solar-to-Hydrogen Efficiency
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2023-11-29 , DOI: 10.1021/acs.jpclett.3c02792
Biao Wang ₁ , Yiwei Fu ₁ , Chunyang Zhang ₁ , Jie Huang ₁ , Wenshuai Chen ₂ , Liejin Guo ₁ , Naixu Li ₃ , Oleg V Prezhdo ₄ , Maochang Liu _{1,

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Affiliation

Here, we demonstrate a concentrated light-induced band edge tuning effect in photocatalytic hydrogen production. This band movement along with Femi level pinning leads to two distinct catalytic behaviors upon irradiation flux increase. Specifically, the concentration of the light promotes more long-lived carriers bound to the surface electronic states, progressively boosting energy conversion efficiency to a maximum value. Afterward, efficiency diminishes gradually due to poor carrier transfer. This work offers critical insights into efficient and economical photocatalytic hydrogen production.

中文翻译：

聚光光诱导带边调谐中的费米能级钉扎可最大限度地提高光催化太阳能制氢效率

在这里，我们展示了光催化制氢中的集中光诱导带边调谐效应。这种能带运动与费米能级钉扎一起导致辐照通量增加时产生两种不同的催化行为。具体来说，光的集中促进了更多长寿命载流子与表面电子态的结合，逐渐将能量转换效率提高到最大值。此后，由于载流子传输不良，效率逐渐下降。这项工作为高效、经济的光催化制氢提供了重要的见解。

更新日期：2023-11-29

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