أرسل هذا في رسالة قصيرة: A combined single crystal neutron/X-ray diffraction and solid-state nuclear magnetic resonance study of the hybrid perovskites CH3NH3PbX3 (X = I, Br and Cl)

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