인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Antimony selenide (Sb<sub>2</sub>Se<sub>3</sub>) emerges as a potential light-absorbing material for thin film photovoltaics and photoelectrochemical (PEC) water-splitting devices, due to its earth-abundant constituents and excellent photoelectric properties. However, losses caused by corrosion and sluggish charge transfer at the semiconductor/electrolyte interface require a co-catalyst to enhance these kinetic factors. In this study, MoS<sub>2</sub> is employed as a cost-effective, noble-metal-free catalyst to enhance the photocurrent density (<i>J</i> <sub>ph</sub>), half-cell solar-to-hydrogen (HC-STH) conversion efficiency and stability of Sb<sub>2</sub>Se<sub>3</sub>-based photocathodes. Optimized thermodynamic/kinetic physical vapor deposition of MoS<sub>2</sub> substantially improves PEC performance, resulting champion Mo/Sb<sub>2</sub>Se<sub>3</sub>/CdS/MoS<sub>2</sub> photocathode that achieves a record <i>J</i> <sub>ph</sub> of 31.03 mA cm<sup>-2</sup> at 0 <i>V</i> <sub>RHE</sub> and the highest HC-STH efficiency of 3.08%, along with stability for over 5 hours in an acidic (pH 1) buffer solution. It is systematically revealed that MoS<sub>2</sub> reduces the photo-corrosion effect, decreases electron-hole recombination, and provides a significant increase in charge transfer efficiency at the semiconductor/electrolyte interface. This work highlights the potential of cost-effective, high-performance Sb<sub>2</sub>Se<sub>3</sub>-based photocathodes in advancing efficient PEC devices for solar hydrogen production.
#Photocurrent
#Antimony
#Selenide
#Photovoltaics
#Materials science
#Photoelectric effect
#Hydrogen production
#Optoelectronics
#Water splitting
#Catalysis
#Photoelectrochemical cell
#Electrode
#Selenium
#Photovoltaic system
#Chemistry
#Electrolyte
#Physical chemistry
#Metallurgy
#Electrical engineering
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