 Based on these novel ideas he has reported a higher efficiency of 18% for cadmium telluride/cadmium sulfide cell [3], compared with 16.5% reported by NREL in the United States in 2002.He currently focuses on low-cost methods to develop thin film solar cells based on electrodeposited copper indium gallium selenide materials, where he has reported efficiencies of 15.9% to date, compared with the highest value of 19.5% reported by NREL [4] using more expensive techniques.His article 'Fermi level pinning and effects on CuInGaSe2-based thin-film solar cells' was selected to be part of the Semiconductor Science and Technology Journal's Highlights of 2009.