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

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Text this: Characterizations of GaN, blue and green LEDs.