Influence of deposition technique on the structural and optical properties of CuS thin films for hole transport layers.

ABSTRACT: This study presents a direct comparison of copper (II) sulfide (CuS) thin films fabricated by spin coating and doctor blade coating as hole transport layers (HTLs) in perovskite solar cells (PSCs). Both sets of films were fully characterized using Xray diffraction (XRD) to determine crystallinity and grain size, scanning electron microscopy (SEM) for morphology, energydispersive Xray spectroscopy (EDAX) for composition, ultraviolet-visible (UV-Vis) spectroscopy for optical bandgap, Xray photoelectron spectroscopy (XPS) for surface chemistry, and ultraviolet photoelectron spectroscopy (UPS) for energy-level alignment and found to be crystalline and phase-pure. Doctor bladecoated films exhibited larger crystallite sizes (≈ 44.9 nm vs. 37.45 nm), slightly lower band gaps (3.15 eV vs. 3.23 eV)

SUBMITTER: Limbani TA 

PROVIDER: S-EPMC12485002 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature