Text this: Study of efficiency of solid state ultra-bright LED as a function of temperature

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