TY - JOUR
T1 - Realization of vertical metal semiconductor heterostructures via solution phase epitaxy
AU - Wang, Xiaoshan
AU - Wang, Zhiwei
AU - Zhang, Jindong
AU - Wang, Xiang
AU - Zhang, Zhipeng
AU - Wang, Jialiang
AU - Zhu, Zhaohua
AU - Li, Zhuoyao
AU - Liu, Yao
AU - Hu, Xuefeng
AU - Qiu, Junwen
AU - Hu, Guohua
AU - Chen, Bo
AU - Wang, Ning
AU - He, Qiyuan
AU - Chen, Junze
AU - Yan, Jiaxu
AU - Zhang, Wei
AU - Hasan, Tawfique
AU - Li, Shaozhou
AU - Li, Hai
AU - Zhang, Hua
AU - Wang, Qiang
AU - Huang, Xiao
AU - Huang, Wei
N1 - Publisher Copyright:
© 2018, The Author(s).
PY - 2018/12/1
Y1 - 2018/12/1
N2 - The creation of crystal phase heterostructures of transition metal chalcogenides, e.g., the 1T/2H heterostructures, has led to the formation of metal/semiconductor junctions with low potential barriers. Very differently, post-transition metal chalcogenides are semiconductors regardless of their phases. Herein, we report, based on experimental and simulation results, that alloying between 1T-SnS2and 1T-WS2induces a charge redistribution in Sn and W to realize metallic Sn0.5W0.5S2nanosheets. These nanosheets are epitaxially deposited on surfaces of semiconducting SnS2nanoplates to form vertical heterostructures. The ohmic-like contact formed at the Sn0.5W0.5S2/SnS2heterointerface affords rapid transport of charge carriers, and allows for the fabrication of fast photodetectors. Such facile charge transfer, combined with a high surface affinity for acetone molecules, further enables their use as highly selective 100 ppb level acetone sensors. Our work suggests that combining compositional and structural control in solution-phase epitaxy holds promises for solution-processible thin-film optoelectronics and sensors.
AB - The creation of crystal phase heterostructures of transition metal chalcogenides, e.g., the 1T/2H heterostructures, has led to the formation of metal/semiconductor junctions with low potential barriers. Very differently, post-transition metal chalcogenides are semiconductors regardless of their phases. Herein, we report, based on experimental and simulation results, that alloying between 1T-SnS2and 1T-WS2induces a charge redistribution in Sn and W to realize metallic Sn0.5W0.5S2nanosheets. These nanosheets are epitaxially deposited on surfaces of semiconducting SnS2nanoplates to form vertical heterostructures. The ohmic-like contact formed at the Sn0.5W0.5S2/SnS2heterointerface affords rapid transport of charge carriers, and allows for the fabrication of fast photodetectors. Such facile charge transfer, combined with a high surface affinity for acetone molecules, further enables their use as highly selective 100 ppb level acetone sensors. Our work suggests that combining compositional and structural control in solution-phase epitaxy holds promises for solution-processible thin-film optoelectronics and sensors.
UR - http://www.scopus.com/inward/record.url?scp=85052938304&partnerID=8YFLogxK
U2 - 10.1038/s41467-018-06053-z
DO - 10.1038/s41467-018-06053-z
M3 - 文章
C2 - 30190475
AN - SCOPUS:85052938304
SN - 2041-1723
VL - 9
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 3611
ER -