High Efficiency Ultra Thin Cadmium Telluride (CdTe) Solar Cells

ISBN-13: 9783659369438 / Angielski / Miękka / 2013 / 148 str.

Amin Nowshad;Islam Mohammad Aminul

Opis

Thin film cadmium telluride absorbers with cadmium sulphide hetero-junction partner are promising candidates for high efficiency low cost solutions of solar energy harvesting devices. These devices have band gaps well-suited for effective absorption of sunlight. Most importantly, the materials used in these devices can be deposited in a variety of industry-friendly ways, so that the cost associated with manufacturing is generally lower than other available technologies. Although poly-crystalline CdS has been found to be the best suited heterojunction partner for CdTe solar cell, the conventional polycrystalline CdS/CdTe cell has few issues that limit device performance. In order to overcome these problems, this study proposes the introduction of poly-CdS to amorphous oxygenated CdS (a-CdS:O) as window layer. The a-CdS:O window material has higher optical band gap (2.5-3.1 eV), better lattice match with CdTe absorber materials and reduced inter-diffusion tendency of CdS and CdTe layers. This book systematically demonstrates the conversion process of poly CdS to a-CdS:O and develops a strategy for the fabrication of suitable a-CdS:O layer to be applied in CdTe solar cells.

O autorze

Dr. Nowshad Amin is a Professor at the Dept. of Electrical, Electronic & Systems Engineering of The National University of Malaysia, where he also leads the Solar Photovoltaic Research Group. He is actively involved in promoting renewable energy resources across the region. He is a visiting professor at the King Saud University in Saudi Arabia.