Improving the CSIP performance |
| |
| Authors: | Patrick Nickels Takeji Ueda Zhenghua An Susumu Komiyama |
| |
| Institution: | 1. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Science, Shanghai 200083, People''s Republic of China;2. Department of Physics and Astronomy, Curriculum in Applied and Materials Sciences, University of North Carolina, Chapel Hill, North Carolina 27599, USA;1. Physics Department, Faculty of Science, Beirut Arab University, P.O. Box 11-5020, Riad El Solh, Beirut 11072809, Lebanon;2. University of Karbala, Karbala, Iraq;3. Université Libanaise, Faculté des sciences (I), Laboratoire de Physique et d’Electronique (LPE), Elhadath, Beirut, Lebanon;4. Condensed Matter Section, The Abdus Salam International Centre for Theoretical Physics (ICTP), Strada Costiera 11, 34014 Trieste, Italy;1. Azar Aytash Co., Technology Incubator, University of Tabriz, Tabriz, Iran;2. Research Institute for Applied Physics and Astronomy, University of Tabriz, Tabriz, Iran;3. Department of Civil Engineering, University of Tabriz, Tabriz, Iran;1. Department of Physics, College of Education for Pure Sciences, University of Basrah, Iraq;2. School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China;3. International Center of Materials Physics, Chinese Academy of Sciences, Shenyang 110015, China |
| |
| Abstract: | A novel highly sensitive detector for long wavelength infrared radiation, called charge sensitive infrared phototransistor (CSIP), is described, with a stress put on the report of recent improvements in the quantum efficiency. Metallic antenna structure placed on the surface to convert incident radiation has to be optimized. In case of the CSIP, where the absorbing quantum well is very close (～100 nm) to the antenna, near field effects have to be taken into consideration. We consider several patterns based either on a double capacitive (dot) or inductive (hole) grating. We present results of a study comparing four different geometries showing that cross shape hole arrays are most promising candidates reaching efficiencies of almost 8%. Further strategies to optimize essential parameters of antennas by using finite difference time domain (FDTD) simulations are considered. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
