TY - JOUR
T1 - Heterostructured WS2/CH3NH3PbI3Photoconductors with Suppressed Dark Current and Enhanced Photodetectivity
AU - Ma, Chun
AU - Shi, Yumeng
AU - Hu, Weijin
AU - Chiu, Ming-Hui
AU - Liu, Zhixiong
AU - Bera, Ashok
AU - Li, Feng
AU - Wang, Hong
AU - Li, Lain-Jong
AU - Wu, Tao
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported by the King Abdullah University of Science and Technology (KAUST).
PY - 2016/3/23
Y1 - 2016/3/23
N2 - High-performance planar photoconductors based on hybrid perovskite CH3NH3 PbI3 and 2D material WS2 were fabricated and characterized for the first time. Due to the superior properties of both perovskite and WS2, these photodetectors with a simple bilayer structure exhibited high on/off ratios and high responsivity. Owing to the high mobility of the WS2 monolayer and the efficient inter facial charges separation, the response speed of the hybrid WS2/perovskite photoconductor was enhanced by four orders of magnitude compared to the reference perovskite single layer. Furthermore, the WS2 monolayer served as an atomically flat substrate, and the perovskite films grown on top showed better crystallinity, which may facilitate the synthesis of other perovskite-based devices. Overall, our results demonstrated a prototypical optoelectronic device built on TMD/perovskite hetero structures, paving their way for future applications.
AB - High-performance planar photoconductors based on hybrid perovskite CH3NH3 PbI3 and 2D material WS2 were fabricated and characterized for the first time. Due to the superior properties of both perovskite and WS2, these photodetectors with a simple bilayer structure exhibited high on/off ratios and high responsivity. Owing to the high mobility of the WS2 monolayer and the efficient inter facial charges separation, the response speed of the hybrid WS2/perovskite photoconductor was enhanced by four orders of magnitude compared to the reference perovskite single layer. Furthermore, the WS2 monolayer served as an atomically flat substrate, and the perovskite films grown on top showed better crystallinity, which may facilitate the synthesis of other perovskite-based devices. Overall, our results demonstrated a prototypical optoelectronic device built on TMD/perovskite hetero structures, paving their way for future applications.
UR - http://hdl.handle.net/10754/621552
UR - http://onlinelibrary.wiley.com/doi/10.1002/adma.201600069/full
UR - http://www.scopus.com/inward/record.url?scp=84961773509&partnerID=8YFLogxK
U2 - 10.1002/adma.201600069
DO - 10.1002/adma.201600069
M3 - Article
C2 - 27008347
SN - 0935-9648
VL - 28
SP - 3683
EP - 3689
JO - Advanced Materials
JF - Advanced Materials
IS - 19
ER -