Title:
POLARIZATION FIELD-CONTROLLED POSITIVE/NEGATIVE PHOTORESPONSIVE DETECTOR, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/231144
Kind Code:
A1
Abstract:
A photoresponsive detector, in particular, a polarization field-controlled positive/negative photoresponsive detector, and a preparation method therefor and a use thereof. The polarization field-controlled positive/negative photoresponsive detector comprises a substrate (1), gate electrodes (2), a ferroelectric layer (3), a low-dimensional semiconductor (4), and a source-drain electrode (5); there is a pair of gate electrodes (2), which are spaced from each other and fixedly arranged on the substrate (1); the ferroelectric layer (3) is fixedly arranged on the substrate (1) and completely covers the gate electrodes (2); the low-dimensional semiconductor (4) is fixedly arranged on the ferroelectric layer (3); the source-drain electrode (5) comprises a source electrode (51) and a drain electrode (52), which are arranged separately on two sides of the low-dimensional semiconductor (4) and fixedly arranged on the ferroelectric layer (3). Compared with the prior art, the photodetector operating on the basis of a PN built-in electric field has the characteristics of high speed and high sensitivity; and the response rate is continuously linearly adjustable from positive to negative under pulse voltage modulation.
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Inventors:
WANG JIANLU (CN)
Application Number:
PCT/CN2022/104580
Publication Date:
December 07, 2023
Filing Date:
July 08, 2022
Export Citation:
Assignee:
UNIV FUDAN (CN)
International Classes:
H01L31/113
Domestic Patent References:
| WO2021254830A1 | 2021-12-23 |
Foreign References:
| CN112542515A | 2021-03-23 | |||
| CN113948594A | 2022-01-18 | |||
| CN105762281A | 2016-07-13 | |||
| CN109950403A | 2019-06-28 |
Attorney, Agent or Firm:
SHANGHAI KESHENG INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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