Hole Transportation in Photocells Based on Hydrogenated Amorphous Silicon Journal title: International Journal of Trend in Scientific Research and Development Authors: Zaynobidinov Sirojidin Zaynobidinovich | Babahodjayev Umar Samsakhodjayevich | Nabiyev A"-ā¢zamjon Bo... Subject(s): Biological Sciences, Computer and Information Science, Engineering, Mathematics, Agricultural Engineering, Management, Engineering, Multidisciplinary