Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7937920 | Solar Energy | 2015 | 8 Pages |
Abstract
Optical characteristics of the top and bottom cells in Cd1âxMgxTe/CuInSe2 tandem solar cells with transparent ZnTe interconnection layer are investigated. Since the reflection coefficient is significantly attenuated in the case of Cd1âxMgxTe/ZnTe interface in comparison to the Cd1âxMgxTe/glass interface, the transmission through the monolithic top cell of the tandem can be calculated ignoring the oscillations. It has been shown that the short-circuit currents in the top and bottom solar cells match when the bandgap of Cd1âxMgxTe is in the range 1.67-1.70Â eV. A good agreement between the measured and calculated periodic oscillations in the top cell transmittance has been demonstrated. It has been shown that the current matching can be achieved with a lower band gap Cd1âxMgxTe top-cell when borosilicate glass substrate is used, and also the short circuit current density is higher, compared to soda lime glass.
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Authors
L.Ð. Kosyachenko, X. Mathew, Ð.L. Ðaslyanchuk, T.Ð. Mykytyuk, Ð.Ð. Fodchuk, V.V. Kulchynsky,