Development of pulsed laser deposition for CdS/CdTe thin film solar cells

Abstract

This work explores in situ fabrication of thin film CdS (100 nm)/CdTe (1.5 μm) solar cells using pulsed laser deposition (PLD). Optimization of the PLD processing conditions, including laser energy density, substrate temperature, and the PLD chamber pressure, was achieved with respect to pinhole-free CdS and CdTe layers and solar power conversion efficiency. High efficiency up to 6.68% has been demonstrated and better performance is anticipated with optimization of the PLD process.