III-V compound semiconductor devices have been unmitigatedly developed for potential applications in illuminating devices, laser diode light sources for optical storage system, full-color display, photo detector, and solar cells. In the field of visible red, near infrared light emitting devices, and solar cells, M-comm provides high-performance 650nm LD, 650nm RCLED, 850nm RCLED & VCSEL, 870nm RCLED, 980nm LD, and high converting efficiency single -junction or tandem solar cells.