Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 53, Issue 4, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6463/ab50ae
Keywords
heterojunction; molybdenum-oxide; photodetector
Categories
Funding
- Ministry of Science and Technology, R O C [MOST 107-2221-E259-013, MOST 108-2221-E-259-021]
Ask authors/readers for more resources
Until recently, different metals have been adopted as the electrode materials for MoOx/Si photodetectors and solar cells, but the influence of these different metals has not been investigated. We have systematically studied and proved that the choice of metal has a great impact on optoelectronic performance. Ag and Al with similar low work functions display similar current?voltage behavior before and after the introduction of MoOx; whereas Au and Ni which own similar high work functions lead to another type of current?voltage behavior. MoOx in the metal/MoOx/Si samples brings the superior diode behavior with an enhanced responsivity and decreased dark current as compared with the metal/Si samples. The choice of Ag as the top electrode on MoOx/Si has low alloying or defect formation with the MoOx/Si structure preventing the deterioration of the diode behavior, and the large downward band bending in MoOx at the Ag/MoOx junction facilitates the multitunnelling capture emission. This leads to high responsivity while maintaining the low dark current.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available