Chalcogen-based thin film transistor using CuInSe2 photo-active layer |
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| Authors: | Kyung-Am Kim Ki-Bong Song JunHo Kim Kyuman Cho |
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| Institution: | aDepartment of Physics, Sogang University, 1142 Shinsu-dong, Mapo-gu Seoul, Republic of Korea;bMedical Information Research Team, Electronics and Telecommunication Research Institute, Republic of Korea;cDepartment of Physics, University of Incheon, Republic of Korea;dInterdisciplinary Program of Integrated Biotechnology/Department of Physics, Sogang University, Republic of Korea |
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| Abstract: | We propose chalcogen-based photo-thin film transistor (P-TFT) using CuInSe2 (CIS) homo-junction. By using a tri-layer process, we fabricated n- and p-type CIS films. Optical and electrical properties of the fabricated CIS films are measured to be suitable for homo-junction. For the fabrication of a P-TFT, n-type CIS generating higher photo current was used for a channel layer whereas p-type CIS with higher carrier density was used for source and drain. The fabricated transistor exhibited typical transistor operation of p-channel enhancement mode and current increase with light. |
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| Keywords: | Chalcogen CuInSe2 Homo-junction Photo TFT |
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