Sinju Thomas
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Structural analyses and photovoltaic device simulations in two and three dimensions applied to Ag-alloyed Cu(In,Ga)Se<sub>2</sub> solar cells Open
The present study reports on the structural changes and related photovoltaic properties resulting from the addition of Ag in Cu(In,Ga)Se 2 (CIGS)-based thin-film solar cells analysed using two-dimensional (2D) and three-dimensional (3D) an…
Effect of Ga Variation on the Bulk and Grain‐Boundary Properties of Cu(In,Ga)Se<sub>2</sub> Absorbers in Thin‐Film Solar Cells and Their Impacts on Open‐Circuit Voltage Losses Open
Polycrystalline widegap Cu(In,Ga)Se 2 (CIGSe) absorbers for top cells in photovoltaic tandem devices can be synthesized via [Ga]/([Ga] + [In]) (GGI) ratios of > 0.5. However, the power conversion efficiencies of such high‐GGI devices are s…
Role of Ag Addition on the Microscopic Material Properties of (Ag,Cu)(In,Ga)Se<sub>2</sub> Absorbers and Their Effects on Losses in the Open‐Circuit Voltage of Corresponding Devices Open
Ag alloying of Cu(In,Ga)Se 2 (CIGSe) absorbers in thin‐film solar cells leads to improved crystallization of these absorber layers at lower substrate temperatures than for Ag‐free CIGSe thin films as well as to enhanced cation interdiffusi…
Effects of material properties of band‐gap‐graded Cu(In,Ga)Se<sub>2</sub> thin films on the onset of the quantum efficiency spectra of corresponding solar cells Open
Polycrystalline Cu(In,Ga)Se 2 (CIGSe) thin‐film solar cells exhibit gradual onset in their external quantum efficiency ( EQE ) spectra whose shape can be affected by various CIGSe material properties. Apart from influences on the charge‐ca…