Hieng Kiat Jun obtained his MEngSci and PhD from the University of Malaya, Malaysia. He is an Associate Professor in the Department of Mechanical and Materials Engineering, Universiti Tunku Abdul Rahman, Malaysia. He conducts experimental research on nanosized energy devices in solar cells and electrochemical energy storage systems. His main topics of interest include dye‑ and quantum dot‑sensitized solar cells, organic solar cells, perovskite solar cells, electrolyte characterization, radiative cooling, and thermoelectric devices.

Foo Wah Low is an Assistant Professor in the Department of Electrical and Electronics Engineering at Universiti Tunku Abdul Rahman, Malaysia. He received his PhD in nanomaterials and nanoscience from Universiti Malaya. His main research interests are in the areas of graphene nanomaterials incorporated with metal oxide for photovoltaic cell application, especially in dye-sensitized solar cells and perovskites for photovoltaic cells.