BROWSE

Related Scientist

cinap's photo.

cinap
나노구조물리연구단
more info

ITEM VIEW & DOWNLOAD

Tuning Carrier Tunneling in van der Waals Heterostructures for Ultrahigh Detectivity

Cited 82 time in webofscience Cited 0 time in scopus
996 Viewed 184 Downloaded
Title
Tuning Carrier Tunneling in van der Waals Heterostructures for Ultrahigh Detectivity
Author(s)
Quoc An Vu; Jin Hee Lee; Van Luan Nguyen; Yong Seon Shin; Seong Chu Lim; Kiyoung Lee; Jinseong Heo; Seongjun Park; Kunnyun Kim; Young Hee Lee; Woo Jong Yu
Subject
Two-dimensional material, ; molybdenum disulfide, ; hexagonal boron nitrite, ; high detectivity, ; heterostructure, ; photodetector
Publication Date
2017-01
Journal
NANO LETTERS, v.17, no.1, pp.453 - 459
Publisher
AMER CHEMICAL SOC
Abstract
Semiconducting transition metal dichalcogenides (TMDs) are promising materials for photodetection over a wide range of visible wavelengths. Photodetection is generally realized via a phototransistor, photoconductor, p-n junction photovoltaic device, and thermoelectric device. The photodetectivity, which is a primary parameter in photo detector design, is often limited by either low photoresponsivity or a high dark current in TMDs materials. Here, we demonstrated a highly sensitive photodetector with a MoS2/h-BN/graphene heterostructure, by inserting a h-BN insulating layer between graphene electrode and MoS2 photoabsorber the dark-carriers were highly suppressed by the large electron barrier (2.7 eV) at the graphene/h-BN junction while the photocarriers were effectively tunneled through small hole barrier (1.2 eV) at the MoS2/h-BN junction. With both high photocurrent/dark current ratio (>10(5)) and high photoresponsivity (180 AW(-1)), ultrahigh photodetectivity of 2.6 x 10(13) Jones was obtained at 7 nth. thick h-BN, about 100-1000 times higher than that of previously reported MoS2-based devices
URI
https://pr.ibs.re.kr/handle/8788114/3490
DOI
10.1021/acs.nanolett.6b04449
ISSN
1530-6984
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
Tuning Carrier Tunneling_Nano Letters_Vu Quoc An.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse