Text this: Graphene intermediate layer in tandem organic photovoltaic cells

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