PMID- 34674528
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20211104
IS  - 1944-8252 (Electronic)
IS  - 1944-8244 (Linking)
VI  - 13
IP  - 43
DP  - 2021 Nov 3
TI  - Manipulating Hot-Electron Injection in Metal Oxide Heterojunction Array for 
      Ultrasensitive Surface-Enhanced Raman Scattering.
PG  - 51618-51627
LID - 10.1021/acsami.1c11977 [doi]
AB  - Efficient photoinduced charge transfer (PICT) resonance is crucial to the 
      surface-enhanced Raman scattering (SERS) performance of metal oxide substrates. 
      Herein, we venture into the hot-electron injection strategy to achieve 
      unprecedented enhanced PICT efficiency between substrates and molecules. A 
      heterojunction array composed of plasmonic MoO(2) and semiconducting WO(3-x) is 
      designed to prove the concept. The plasmonic MoO(2) generates intense localized 
      surface plasmon resonance under illumination, which can generate near-field Raman 
      enhancement as well as accompanied plasmon-induced hot-electrons. The 
      hot-electron injection in direct interfacial charge transfer and plasmon-induced 
      charge transfer process can effectively promote the PICT efficiency between 
      substrates and molecules, achieving a record Raman enhancement factor among metal 
      oxide substrates (2.12 x 10(8)) and the ultrasensitive detection of target 
      molecule down to 10(-11) M. This work demonstrates the possibility of 
      hot-electron manipulation to realize unprecedented Raman enhancement in metal 
      oxides, offering a cutting-edge strategy to design high-performance SERS 
      substrates.
FAU - Fan, Xingce
AU  - Fan X
AUID- ORCID: 0000-0002-2508-3063
AD  - School of Physics, Southeast University, Nanjing 211189, China.
FAU - Wei, Penghua
AU  - Wei P
AD  - School of Physics, Southeast University, Nanjing 211189, China.
FAU - Li, Guoqun
AU  - Li G
AD  - School of Physics, Southeast University, Nanjing 211189, China.
FAU - Li, Mingze
AU  - Li M
AD  - School of Physics, Southeast University, Nanjing 211189, China.
FAU - Lan, Leilei
AU  - Lan L
AD  - School of Physics, Southeast University, Nanjing 211189, China.
FAU - Hao, Qi
AU  - Hao Q
AD  - School of Physics, Southeast University, Nanjing 211189, China.
FAU - Qiu, Teng
AU  - Qiu T
AUID- ORCID: 0000-0002-1160-2619
AD  - School of Physics, Southeast University, Nanjing 211189, China.
LA  - eng
PT  - Journal Article
DEP - 20211021
PL  - United States
TA  - ACS Appl Mater Interfaces
JT  - ACS applied materials & interfaces
JID - 101504991
SB  - IM
OTO - NOTNLM
OT  - direct interfacial charge transfer
OT  - heterojunction array
OT  - localized surface plasmon resonance
OT  - photoinduced charge transfer
OT  - plasmon-induced charge transfer
OT  - surface-enhanced Raman scattering
EDAT- 2021/10/23 06:00
MHDA- 2021/10/23 06:01
CRDT- 2021/10/22 05:25
PHST- 2021/10/23 06:00 [pubmed]
PHST- 2021/10/23 06:01 [medline]
PHST- 2021/10/22 05:25 [entrez]
AID - 10.1021/acsami.1c11977 [doi]
PST - ppublish
SO  - ACS Appl Mater Interfaces. 2021 Nov 3;13(43):51618-51627. doi: 
      10.1021/acsami.1c11977. Epub 2021 Oct 21.