{"id":26,"date":"2018-11-12T06:14:22","date_gmt":"2018-11-12T06:14:22","guid":{"rendered":"https:\/\/devops.gtiit.edu.cn\/wp\/leunggroup\/?page_id=26"},"modified":"2025-10-22T03:17:38","modified_gmt":"2025-10-22T03:17:38","slug":"research-interests","status":"publish","type":"page","link":"https:\/\/sites.gtiit.edu.cn\/xieresearchgroup\/research-interests\/","title":{"rendered":"Research Interests"},"content":{"rendered":"\t\t
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<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Relating Transport Properties to Electronic Structures of Molecular Junctions <\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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(A) Molecular junction setup; (B) Junction I-V characteristics; (C) Electronic structures of junctions: energy offset \u03b5\u00a0and molecule-electrode coupling \u0393.\u00a0 <\/h5><\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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The Molecular Electronics Lab is dedicated to investigating the quantum transport behavior and regulation mechanism of materials at the nanoscale (molecular level). On the one hand, we design functional devices through device\/molecular structure; on the other hand, we establish the relationship between device electrical properties and electronic structure through semiconductor physics theory to explain the physical mechanism of devices, and provide experimental schemes to guide device design and performance optimization.\u00a0<\/p>

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Transport Mechanism Schematic Representation <\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Tunneling regime  <\/h4><\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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1. Tunneling Regime\u00a0<\/h4>

Electrons transport through a barrier that will block them classically, so called tunneling. The low-bias resistance can be expressed as:\u00a0<\/p>

R<\/em>=R0<\/sub><\/i>e\u03b2L <\/sup><\/em>\u00a0<\/p>

Where R0<\/sub><\/i>\u00a0is effective contact resistance, \ud835\udefd is tunneling attenuation factor, \ud835\udc3f is the distance between two electrodes.\u00a0<\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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hopping regime (Thermally activated) <\/h4><\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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2. Hopping Regime (Thermally Activated)\u00a0<\/h4>

With increasing molecular length, a crossover from (non-resonant) tunneling to conduction via hopping can only be expected.\u00a0<\/p>

R<\/i>=R0<\/sub><\/i>‘+C<\/i>[L<\/i>exp(Ea<\/sub><\/i>\/kB<\/sub>T<\/i>)]\u00a0<\/p>

Where\u00a0Ea<\/sub><\/i>\u00a0is activation energy,\u00a0T<\/i>\u00a0is temperature.\u00a0<\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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\"\"<\/figure>

Application & Challenges <\/h3>

Molecular electronics is a high Interdisciplinary area which cover chemistry, physics, electronics and nanoelectronics, technology, artificial intelligence and medical equipment.
Molecular electronics is an effective way to explore the structure, electrical properties and mechanical properties of materials at the molecular level. \n
The field is facing the challenge of moving from the laboratory to the application of logic circuits. <\/p><\/div><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Relating Transport Properties to Electronic Structures …<\/p>\n

Research Interests<\/span> \u67e5\u770b\u5168\u6587 »<\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":[],"_links":{"self":[{"href":"https:\/\/sites.gtiit.edu.cn\/xieresearchgroup\/wp-json\/wp\/v2\/pages\/26"}],"collection":[{"href":"https:\/\/sites.gtiit.edu.cn\/xieresearchgroup\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.gtiit.edu.cn\/xieresearchgroup\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.gtiit.edu.cn\/xieresearchgroup\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.gtiit.edu.cn\/xieresearchgroup\/wp-json\/wp\/v2\/comments?post=26"}],"version-history":[{"count":3,"href":"https:\/\/sites.gtiit.edu.cn\/xieresearchgroup\/wp-json\/wp\/v2\/pages\/26\/revisions"}],"predecessor-version":[{"id":1141,"href":"https:\/\/sites.gtiit.edu.cn\/xieresearchgroup\/wp-json\/wp\/v2\/pages\/26\/revisions\/1141"}],"wp:attachment":[{"href":"https:\/\/sites.gtiit.edu.cn\/xieresearchgroup\/wp-json\/wp\/v2\/media?parent=26"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}