Investigation of a stable Mo substrate for chalcopyrite solar cells: a green process for sustainable energy applications oleh Tuan Pham Anh, Quang Nguyen Xuan, Huy Tran Duc, Dung Dang Viet Anh, Phan Vu Ngoc, Hoang Phan Huy, Tung Duong Thanh, Cuong Nguyen Duy