An organic semiconductor laser device is composed of a positive electrode layer, an electron hole-transporting layer, a light-emitting layer containing an organic dye and having an open end, an electron-transporting layer, and a negative electrode layer in order. The electron hole-transporting layer...http://www.google.co.uk/patents/US20030103537?utm_source=gb-gplus-sharePatent US20030103537 - ORGANIC SEMICONDUCTOR LASER DEVICE
