Journal
APPLIED PHYSICS LETTERS
Volume 94, Issue 18, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3130086
Keywords
binding energy; elemental semiconductors; excitons; nanostructured materials; photoconductivity; photodetectors; photoemission; semiconductor devices; silicon; size effect
Categories
Funding
- Center for Distributed Sensor Network at GIST
- Korea Science and Engineering Foundation (KOSEF) NCRC
- Korean Government (MEST) [R15-2008-006-02001-0]
Ask authors/readers for more resources
We report on the effect of nanocrystal size on the photocurrent of silicon nanocrystal (Si NC) photodetectors. The photocurrent onset energy was increased with decreasing the size of Si NCs, which agreed with the blueshift in the absorption onset. The increase in the quantum efficiency with increasing the size of Si NCs was much larger than the increase in the absorbance with increasing the size of Si NCs. This was attributed to the differences in charge separation for Si NC of different sizes, which was influenced by the recombination rate and binding energy of photogenerated excitons in Si NCs.
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
Share Paper
