“Characteristics of NIO Compound Material used in PV Cells, EC Devices, UV Photodetectors, and Gas Sensors: Characterization and Potential Applications of Nickel Oxide Compound Material”, JASRAE, vol. 19, no. 4, pp. 585–590, Jul. 2022, Accessed: Jun. 27, 2025. [Online]. Available: https://ignited.in/index.php/jasrae/article/view/14013