NUMERICAL STUDY OF p-n INTERFACE EFFECTS TO ENHANCE PERFORMANCE OF PIEZOELECTRIC CORE-SHELL NANO WIRES

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 334
  • Download : 0
simulated piezoelectric enhancements of p - n core shell nanowires with an inner-core cylinder of n-type ZnO and an outer-shell cylinder of p-type poly-3-hexylthiophene. Compared with conventional n-type ZnO nanowires, the piezoelectric potential of p - n core shell nanowires with the same dimensions (core part; n-ZnO), calculated by subtracting the electrical potential of the uncompressed core shell nanowires [phi(ele)(T-z = 0)] from that of compressed nanowires (phi(tota)(ele)l) according to phi(p-n)(piezo) phi(ele)(total)(T-z=0), are enhanced by more than a factor of 10. As the magnitude of vertical external compression (T-z) is varied from 0 to 9 x 10(7) N/m(2), the piezoelectric potential of the model system increases. This improvement in the piezoelectric potential is attributed to the presence of a depletion zone at the p - n interface (space-charge region), which reduces the carrier screening of the piezoelectric potential by removing free carriers. Our results suggest that the structure proposed here for p - n core shell rianowires could improve the performance of photovoltaic systems.
Publisher
BEGELL HOUSE INC
Issue Date
2015
Language
English
Article Type
Article
Citation

INTERNATIONAL JOURNAL FOR MULTISCALE COMPUTATIONAL ENGINEERING, v.13, no.2, pp.115 - 121

ISSN
1543-1649
URI
http://hdl.handle.net/10203/198265
Appears in Collection
CH-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0