PMID- 26505460
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20160229
LR  - 20151105
IS  - 2040-3372 (Electronic)
IS  - 2040-3364 (Linking)
VI  - 7
IP  - 44
DP  - 2015 Nov 28
TI  - Enhancement of photodetection characteristics of MoS2 field effect transistors 
      using surface treatment with copper phthalocyanine.
PG  - 18780-8
LID - 10.1039/c5nr04836b [doi]
AB  - Recently, two-dimensional materials such as molybdenum disulfide (MoS2) have been 
      extensively studied as channel materials for field effect transistors (FETs) 
      because MoS2 has outstanding electrical properties such as a low subthreshold 
      swing value, a high on/off ratio, and good carrier mobility. In this study, we 
      characterized the electrical and photo-responsive properties of MoS2 FET when 
      stacking a p-type organic copper phthalocyanine (CuPc) layer on the MoS2 surface. 
      We observed that the threshold voltage of MoS2 FET could be controlled by 
      stacking the CuPc layers due to a charge transfer phenomenon at the interface. 
      Particularly, we demonstrated that CuPc/MoS2 hybrid devices exhibited high 
      performance as a photodetector compared with the pristine MoS2 FETs, caused by 
      more electron-hole pairs separation at the p-n interface. Furthermore, we found 
      the optimized CuPc thickness ( approximately 2 nm) on the MoS2 surface for the best performance 
      as a photodetector with a photoresponsivity of  approximately 1.98 A W(-1), a detectivity of 
       approximately 6.11 x 10(10) Jones, and an external quantum efficiency of  approximately 12.57%. Our study 
      suggests that the MoS2 vertical hybrid structure with organic material can be 
      promising as efficient photodetecting devices and optoelectronic circuits.
FAU - Pak, Jinsu
AU  - Pak J
AD  - Department of Physics and Astronomy, and Institute of Applied Physics, Seoul 
      National University, Seoul 08826, Korea. minmi0924@gmail.com tlee@snu.ac.kr.
FAU - Jang, Jingon
AU  - Jang J
FAU - Cho, Kyungjune
AU  - Cho K
FAU - Kim, Tae-Young
AU  - Kim TY
FAU - Kim, Jae-Keun
AU  - Kim JK
FAU - Song, Younggul
AU  - Song Y
FAU - Hong, Woong-Ki
AU  - Hong WK
FAU - Min, Misook
AU  - Min M
FAU - Lee, Hyoyoung
AU  - Lee H
FAU - Lee, Takhee
AU  - Lee T
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20151027
PL  - England
TA  - Nanoscale
JT  - Nanoscale
JID - 101525249
EDAT- 2015/10/28 06:00
MHDA- 2015/10/28 06:01
CRDT- 2015/10/28 06:00
PHST- 2015/10/28 06:00 [entrez]
PHST- 2015/10/28 06:00 [pubmed]
PHST- 2015/10/28 06:01 [medline]
AID - 10.1039/c5nr04836b [doi]
PST - ppublish
SO  - Nanoscale. 2015 Nov 28;7(44):18780-8. doi: 10.1039/c5nr04836b. Epub 2015 Oct 27.