Flexible Ge-on-polyimide detectors.

Authors :: Ho, W. S.
Dai, Y.-H.
Deng, Y.
Lin, C.-H.
Chen, Y.-Y.
Lee, C.-H.
Liu, C. W.
Source :: Applied Physics Letters; 6/29/2009, Vol. 94 Issue 26, p261107, 3p, 3 Diagrams, 2 Graphs
Publication Year :: 2009
Abstract: A flexible Ge-on-polyimide photodetector is demonstrated. The single crystalline thin film of Ge was transferred on the polyimide by adhesive wafer bonding and smart-cut techniques. A simple tunneling metal-oxide-semiconductor structure is fabricated for the detector applications. Due to the transparency of the polyimide, the responsivity of the detector is sensitive to the environments. At -2 V, the photodetector on the stainless steel has responsivities of 220, 200, and 140 mA/W at wavelength of 850, 1310, and 1550 nm, respectively. [ABSTRACT FROM AUTHOR]