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Title:
LITHIUM NIOBATE HAVING P-TYPE NANOWIRE REGION OR N-TYPE NANOWIRE REGION AND PREPARATION METHOD THEREFOR, AND METHOD FOR CONVERTING CARRIER TYPE THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/051844
Kind Code:
A1
Abstract:
A lithium niobate having a p-type nanowire region and/or an n-type nanowire region and a preparation method therefor. The method comprises: carrying out heat treatment on a multi-domain lithium niobate crystal and then cooling, so that hydrogen ions in the multi-domain lithium niobate crystal are fixed in a domain wall region; and polarizing the heat-treated multi-domain lithium niobate crystal, and reversing the polarization direction of one or more domains of the multi-domain lithium niobate crystal by applying a voltage. The lithium niobate comprises the lithium niobate crystal and the p-type nanowire region and/or the n-type nanowire region which are arranged in the lithium niobate crystal and are close to the surface of the lithium niobate crystal. A method for converting the type of the carrier in a lithium niobate nanowire region, comprising polarizing the obtained lithium niobate again to reverse the polarization direction of the nanowire region, thereby changing the type of the carrier in the lithium niobate nanowire region.

Inventors:
ZHANG GUOQUAN (CN)
WANG XIAOJIE (CN)
JIAO YUEJIAN (CN)
BO FANG (CN)
XU JINGJUN (CN)
Application Number:
PCT/CN2020/091167
Publication Date:
March 25, 2021
Filing Date:
May 20, 2020
Export Citation:
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Assignee:
UNIV NANKAI (CN)
International Classes:
C30B29/30; B82Y40/00; C30B33/02; C30B33/04
Domestic Patent References:
WO2015088371A12015-06-18
Foreign References:
CN106283194A2017-01-04
CN106283194A2017-01-04
CN110670134A2020-01-10
CN110670134A2020-01-10
CN108560060A2018-09-21
CN104793287A2015-07-22
CN201910894519A2019-09-20
Other References:
See also references of EP 4033013A4
Attorney, Agent or Firm:
ACIP LAW OFFICES (CN)
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