Publication: Modeling of hydrogenated amorphous silicon (a-Si:H) thin films prepared by the Saddle Field Glow Discharge Method for photo-voltaic applications

All || By Area || By Year

Title	Modeling of hydrogenated amorphous silicon (a-Si:H) thin films prepared by the Saddle Field Glow Discharge Method for photo-voltaic applications
Authors/Editors*	A.V. Sachenko, A.I. Shkrebtii, F. Gaspari, N. Kherani, and A. Kazakevitch
Where published*	EPIOPTICS-9: proceedings of the 39th course of the International School of Solid State Physics
How published*	Proceedings
Year*	2008
Volume
Number
Pages	76-81
Publisher
Keywords	Solar cell optimization Car Parrinello Molecular Dynamics
Link
Abstract	We present results of combined theoretical and experimental study of the thin hydrogenated amorphous silicon (a-Si:H) films based solar cells. The films for efficient and inexpensive solar cells were grown by the Saddle Field Glow Discharge Method. Car-Parrinello Molecular Dynamics was used to model a-Si:H material. An analytical model to optimize photo-conversion efficiency a-Si:H based solar cells with contact grid has been developed. This two-dimensional model allows an optimization of the p-i-n sandwich in terms of carrier mobilities, layers thickness, doping levels and others. The geometry of the grid fingers that conduct the photo- current to the bus bars and ITO/SiO2 layers has been optimizes as well as the effect of non-zero sun incidence angles. We demonstrate the optimization method to the typical a-Si:H solar cells.