Effects of ligand coordination on Ag₈SnS₆ as a photoabsorber for thin film solar cells.

ABSTRACT: Ag₈SnS₆ (ATS) nanoparticles, with a band gap of 1.35 eV, which is located exactly at the Schockley-Queisser optimal value for a single-junction solar cell, were utilized as a photoabsorber component in solid state photovoltaic devices. The as-made particles were capped with long aliphatic chains of oleic acid and oleylamine. After surface functionalization of the shorter and extremely basic formamidinium cations, an increase of the absorption coefficient throughout the visible spectrum range was observed. The ligand exchange led also to a slight increase of the band gap, by a value of 0.05 eV. XRD, XPS, UPS, diffuse reflectance, TEM and EDX characterization studies revealed the structure of the nanoparticles and finally proof-of-concept thin film solar cells were fabr

SUBMITTER: Dallas P 

PROVIDER: S-EPMC11915202 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature