أرسل هذا في رسالة قصيرة: Improvement of the solar efficiency of polymer solar cells by using 1, 3, 5-trichlorobenzene as Co-solvent

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