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

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Text this: AC-driven, color- and brightness-tunable organic light-emitting diodes constructed from an electron only device