Improvement of solar cell performance and reversibility of ageing effects in hydrogenated amorphous silicon solar cells under illumination and electric field stress: Role of TCO and substrate

Reversible Efficiency Variation of Tandem Amorphous/Microcrystalline Si Photovoltaic Modules in Outdoor Operation

“…However, one of the main limitations in such a class of PV devices is the Staebler-Wronski effect, responsible for the degradation of their power conversion efficiency, within approximately the first one thousand hours of light soaking [2][3][4]. Several experimental studies [5][6][7][8][9][10] led to highlight performance instability phenomena for the mentioned devices, underling that recovery and improvement of such performance 2 of 11 are observable, by subjecting such devices (both of single-junction and tandem types) to DC reverse bias stresses under illumination, or to operation in the Maximum Power Point (MPP) under variable conditions of temperature and illumination. In particular, in our previous work [10], we had observed relevant electric performances improvements, as a systematic phenomenon, during tests performed outdoor on stabilized tandem PV minimodules working continuously in the MPP; going from morning to afternoon illumination.…”

Optimization of intrinsic layer thickness, dopant layer thickness and concentration for a-SiC/a-SiGe multilayer solar cell efficiency performance using Silvaco software

“…a-Si alloy is a material that used to reduce the cost of solar cells in the future [5,6]. The material is easy to dope compared to crystalline Si, hence the energy used in doping process can be saved [7,8]. By combining a-Si and intrinsic layer formation, it has high optical absorption coefficient over the wavelength of solar spectrum that enable to fabricate thin film solar cell that can fully absorb the incoming light in its very thin thickness layer [9].…”