發送短信 : 2D black phosphorous nanosheets as a hole transporting material in perovskite solar cells

             ___      _  _    _    _    _    _   
    ___     / _ \\   | \| || | || | || | || | || 
   /   ||  / //\ \\  |  ' || | || | || | || | || 
  | [] || |  ___  || | .  || | \\_/ || | \\_/ || 
   \__ || |_||  |_|| |_|\_||  \____//   \____//  
    -|_|| `-`   `-`  `-` -`    `---`     `---`   
     `-`