CUED Publications database

Graphene-Quantum Dot Hybrid Optoelectronics at Visible Wavelengths

Salihoglu, O and Kakenov, N and Balci, O and Balci, S and Kocabas, C (2018) Graphene-Quantum Dot Hybrid Optoelectronics at Visible Wavelengths. ACS Photonics, 5. pp. 2384-2390.

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Abstract

© 2018 American Chemical Society. With exceptional electronic and gate-tunable optical properties, graphene provides new possibilities for active nanophotonic devices. Requirements of very large carrier density modulation, however, limit the operation of graphene based optical devices in the visible spectrum. Here, we report a unique approach that avoids these limitations and implements graphene into optoelectronic devices working in the visible spectrum. The approach relies on controlling nonradiative energy transfer between colloidal quantum-dots and graphene through gate-voltage induced tuning of the charge density of graphene. We demonstrate a new class of large area optoelectronic devices including fluorescent display and voltage-controlled color-variable devices working in the visible spectrum. We anticipate that the presented technique could provide new practical routes for active control of light-matter interaction at the nanometer scale, which could find new implications ranging from display technologies to quantum optics.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 May 2018 05:50
Last Modified: 24 Nov 2020 08:38
DOI: 10.1021/acsphotonics.8b00163