Quantum Dots-Based Photoelectrochemical Hydrogen Evolution from Water Splitting
Quantum Dots-Based Photoelectrochemical Hydrogen Evolution from Water Splitting
复制标题
DOI：
10.1002/aenm.202003233
复制
发表时间：
2021-02-08
影响因子：
27.8
通讯作者：
Rosei, Federico
中科院分区：
文献类型：
--
作者：
Jin, Lei;Zhao, Haiguang;Rosei, Federico
太阳能驱动光电化学（PEC）析氢是将太阳能转化为可储存燃料的一种有前途的可持续方法。半导体量子点（QD）由于其宽的组成/尺寸/形状可调的吸收光谱（从紫外到近红外，与太阳光谱显著重叠）而越来越多地用于PEC器件中。尽管作出了重大努力，最近也取得了进展，但在这一快速发展的领域，仍有若干重大挑战尚未解决。本文综述了近年来基于量子点的质子交换膜H-2的材料、结构和性能研究的最新进展，包括光电阳极、光电阴极和串联质子交换膜系统。特别是，最近开发的PEC H-2代的策略进行了批判性分析。QD的具体特征（例如，尺寸/形状/组成可调的吸收带边所产生的量子限制，易于制造通过化学方法，和多激子产生），电荷产生，和电荷转移的光电极及其对PEC器件的性能的影响进行了讨论。最后讨论了量子点光电转换技术在高效稳定的光电转换应用中面临的挑战和机遇。
Solar-driven photoelectrochemical (PEC) hydrogen evolution is a promising and sustainable approach to convert solar energy into a fuel that can be stored. Semiconductor quantum dots (QDs) are increasingly used in PEC devices due to their broad composition/size/shape tunable absorption spectrum (from ultraviolet to near-infrared, with significant overlap with the solar spectrum). Despite significant efforts and recent progress, several major challenges remain unresolved in this fast-developing field. Here, the latest progress in tailoring the materials, structure, and performance of QDs-based PEC H-2 generation, including photoanodes, photocathodes, and tandem PEC systems, is summarized. In particular, recent strategies developed for PEC H-2 generation are critically analyzed. Specific features of QDs (e.g., size/shape/composition-tunable absorption band edge arising from quantum confinement, ease of fabrication through chemical approaches, and multiple exciton generation), charge generation, and charge transfer of photoelectrodes and their implications on the performance of PEC devices are discussed. Future challenges and opportunities working, toward high-efficiency and stable QDs-based PEC applications are discussed in the conclusion.