أرسل هذا في رسالة قصيرة: Surface Doping of Sn in Orthorhombic CH<inf>3</inf>NH<inf>3</inf>PbI<inf>3</inf> for Potential Perovskite Solar Cells: First Principles Study

  _____    _    _    ______    _    _             
 |__  //  | || | || |      \\ | || | ||   ____    
   / //   | || | || |  --  // | || | ||  |    \\  
  / //__  | \\_/ || |  --  \\ | \\_/ ||  | [] ||  
 /_____||  \____//  |______//  \____//   |  __//  
 `-----`    `---`   `------`    `---`    |_|`-`   
                                         `-`