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

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