أرسل هذا في رسالة قصيرة: Novel hole transporting materials based on triptycene core for high efficiency mesoscopic perovskite solar cells

__    __    _____    _    _     _____     ______  
\ \\ / //  |  ___|| | || | ||  |  ___||  /_   _// 
 \ \/ //   | ||__   | || | ||  | ||__      | ||   
  \  //    | ||__   | \\_/ ||  | ||__     _| ||   
   \//     |_____||  \____//   |_____||  /__//    
    `      `-----`    `---`    `-----`   `--`