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氯化物处理改善用于光电化学二氧化碳还原的碲化锌吸收剂。

Chloride Treatments Improve Zinc Telluride Absorbers for Photoelectrochemical Carbon Dioxide Reduction.

作者信息

Muzzillo Christopher P, Lai Yungchieh, Haber Joel A, Zakutayev Andriy

机构信息

National Renewable Energy Laboratory, Golden, Colorado 80401, United States.

California Institute of Technology, Pasadena, California 91125, United States.

出版信息

ACS Appl Energy Mater. 2025 Jan 7;8(2):983-990. doi: 10.1021/acsaem.4c02498. eCollection 2025 Jan 27.

DOI:10.1021/acsaem.4c02498
PMID:39886450
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11775882/
Abstract

Utilizing sunlight for photoelectrochemical carbon dioxide reduction reaction (PEC CO RR) is a carbon-neutral path to valuable liquid fuels. Higher quality photoabsorbers are needed to improve the efficiency of the PEC CO RR process. We show how the optoelectronic properties of sputtered ZnTe absorbers can be improved for this purpose via chloride treatments. MnCl and MgCl heat treatments recrystallize ZnTe absorbers to enlarge grains and improve photoluminescence. These material improvements result in the highest PEC CO RR photocurrent density reported for planar ZnTe and >50% Faradaic efficiency to CO formation with diaryliodonium additive in the solution. These results pave the way to integration of polycrystalline thin-film photoabsorbers in PEC CO RR systems.

摘要

利用阳光进行光电化学二氧化碳还原反应（PEC CO RR）是一条通往有价值液体燃料的碳中和途径。需要更高质量的光吸收剂来提高PEC CO RR过程的效率。我们展示了如何通过氯化物处理来改善溅射ZnTe光吸收剂的光电性能，以实现这一目的。MnCl和MgCl热处理使ZnTe光吸收剂重结晶，从而增大晶粒并改善光致发光。这些材料性能的改善使得平面ZnTe的PEC CO RR光电流密度达到了已报道的最高值，并且在溶液中添加二芳基碘鎓添加剂时，生成CO的法拉第效率超过50%。这些结果为多晶薄膜光吸收剂在PEC CO RR系统中的集成铺平了道路。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cfd8/11775882/91c2944d7f44/ae4c02498_0008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cfd8/11775882/91c2944d7f44/ae4c02498_0008.jpg

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