Characteristics of ZnGa₂O₄ coated solar cells and their functions as UV-C sensors

Abstract

The ZnGa2O4 down-converting layer was deposited on the incident side of perovskite solar cell. The down-converting layer was coated by sol-gel spinning. Perovskite solar cells with ZnGa2O4 films operate without loss of efficiency and produce additional current when irradiated with 254 nm light. It was confirmed that nano devices with both a function as a UV-C sensor and a function as a solar cell can be implemented.

Zinc Gallium Oxide—A Review from Synthesis to Applications

“…Additionally, the next-generation developments in power electronics, concerning high efficiency and power density at low production cost, will make ZnGa 2 O 4 desirable. Improvement in the efficiency of perovskite solar cells has also been observed recently by using the coating of ZnGa 2 O 4 , which indicates its future use in the upcoming devices [120].…”

Heteroepitaxial (111) ZnGa2O4 Thin Films Grown on (00.1) Sapphire by Pulsed Laser Deposition

“…[1][2][3][4][5][6][7][8][9][10][11][12][13] Recently, ZnGa 2 O 4 thin films have attracted intensive interest for potential wide-bandgap oxides device applications in luminescence, transistors, and sensors. [14][15][16][17][18][19][20][21][22][23][24][25] High-quality stoichiometric or near-stoichiometric ZnGa 2 O 4 epitaxial thin films, with low average density of crystalline defects, would be a preferable platform to study the fundamentals of physical and chemical properties of this material in view of potential device applications. The heteroepitaxial growth of ZnGa 2 O 4 thin films was first achieved along the (100) crystallographic direction on cubic (100) MgO substrates (about 1% lattice mismatch) using the solvent evaporation epitaxy method and pulsed laser deposition (PLD).…”