“…Accordingly, to achieve this and exceed the efficiency limit of single-junction cells, CdZnTe has emerged as a promising material that can be applied as an absorber layer not only in single-junction thin film solar cells but also in tandem architectures owing to its high absorption coefficient, mobility and tunable band gap. 117,149 CdZnTe thin film solar cells are fabricated with two configurations, either in the substrate (with architecture of metal substrate or metal coating substrate/p-CdZnTe/n-CdS/ITO/glass) structure or superstrate (with architecture Glass/ITO/CdS/CdZnTe/metal contact) structure. When a metal sheet or metallic-coated glass substrate with the desired dimensions as the base is employed, it is recognized as the substrate configuration, whereas the conducting transparent oxide-coated glass substrate comprising architecture is known as the superstrate configuration.…”