Electrically switchable graphene photo-sensor using phase-change gate filter for non-volatile data storage application with high-speed data writing and access
An electrically switchable graphene photo-sensor (SGPS) is proposed for multiple functional applications. SGPS is a dual-gate thin-film transistor with a graphene channel and a phase-change chalcogenide (GeSbTe) gate filter. This gate filter is switchable between the amorphous (optically transparent...
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| creator | Gang Zhang Tian-Zi Shen Hua-Min Li Dae-Yeong Lee Chang-Ho Ra Won Jong Yoo |
| description | An electrically switchable graphene photo-sensor (SGPS) is proposed for multiple functional applications. SGPS is a dual-gate thin-film transistor with a graphene channel and a phase-change chalcogenide (GeSbTe) gate filter. This gate filter is switchable between the amorphous (optically transparent) and crystalline (optically non-transparent) phases by applying the gate biases. When the gate filter is switched to the amorphous/crystalline (a/c) phases, the SGPS will/not yield photo-current (I pc ) under a constant light source. By detecting the presence of I pc , two data states can be read out so as to accomplish non-volatile data storage. SGPS can present a switching speed of ~50 ns between the a/c phases of GeSbTe and a data access speed as fast as 10 ns. SGPS shows very good 10-year data retention at 85°C and good endurance of >;10 6 switching cycles between the a/c phases of the GeSbTe gate filter. |
| doi_str_mv | 10.1109/IEDM.2011.6131476 |
| format | Conference Proceeding |
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| fulltext | fulltext_linktorsrc |
| identifier | ISSN: 0163-1918 |
| ispartof | 2011 International Electron Devices Meeting, 2011, p.2.5.1-2.5.4 |
| issn | 0163-1918 2156-017X |
| language | eng |
| recordid | cdi_ieee_primary_6131476 |
| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Indium tin oxide Logic gates Memory Optical filters Optical switches |
| title | Electrically switchable graphene photo-sensor using phase-change gate filter for non-volatile data storage application with high-speed data writing and access |
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