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

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發送短信 : On the origin of the electron blocking effect by an n-type AlGaN electron blocking layer