Sulfur Treatment Passivates Bulk Defects in Sb <sub>2</sub> Se <sub>3</sub> Photocathodes for Water Splitting
نویسندگان
چکیده
Sb2Se3 has emerged as an important photoelectrochemical (PEC) and photovoltaic (PV) material due to its rapid rise in photoconversion efficiencies. However, a complex defect chemistry, which reduces the maximum photovoltage. Thus, it is understand these defects develop passivation strategies Sb2Se3. A comprehensive investigation of charge carrier dynamics influence sulfur treatment on optoelectronic properties performed using time-resolved microwave conductivity (TRMC), photoluminescence (PL) spectroscopy, low-frequency Raman spectroscopy (LFR). The key finding this work that upon Sb2Se3, lifetime increased by deep both surface region bulk, evidenced TRMC decay dynamics, radiative recombination efficiency, decreased level emission (PL), emergence new vibration modes LFR.
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ژورنال
عنوان ژورنال: Advanced Functional Materials
سال: 2022
ISSN: ['1616-301X', '1616-3028']
DOI: https://doi.org/10.1002/adfm.202112184