Temperature-dependent Photoluminescence of Boron-doped ZnO Nanorods 


Vol. 34,  No. 11, pp. 3335-3339, Nov.  2013
10.5012/bkcs.2013.34.11.3335


PDF
  Tumbnail

  Abstract

Boron-doped ZnO (BZO) nanorods were grown on quartz substrates using hydrothermal synthesis, and the temperature-dependence of their photoluminescence (PL) was measured in order to investigate the origins of their PL properties. In the UV range, near-band-edge emission (NBE) was observed from 3.1 to 3.4 eV; this was attributed to various transitions including recombination of free excitons and their longitudinal optical (LO) phonon replicas, and donor-acceptor pair (DAP) recombination, depending on the local lattice configuration and the presence of defects. At a temperature of 12 K, the NBE produces seven peaks at 3.386, 3.368, 3.337, 3.296, 3.258, 3.184, and 3.106 eV. These peaks are, respectively, assigned to free excitons (FX), neutral-donor bound excitons (DoX), and the first LO phonon replicas of DoX, DAP, DAP-1LO, DAP-2LO, and DAP-3LO. The peak position of the FX and DAP were also fitted to Varshni’s empirical formula for the variation in the band gap energy with temperature. The activation energy of FX was about ~70 meV, while that of DAP was about ~38 meV. We also discuss the low temperature PL near 2.251 eV, related to structural defects.

  Statistics
Cumulative Counts from November, 2022
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.


  Cite this article

[IEEE Style]

S. Kim, H. Park, G. Nam, H. Yoon, J. S. Kim, J. S. Kim, J. Son, S. Lee, J. Leem, "Temperature-dependent Photoluminescence of Boron-doped ZnO Nanorods," Bulletin of the Korean Chemical Society, vol. 34, no. 11, pp. 3335-3339, 2013. DOI: 10.5012/bkcs.2013.34.11.3335.

[ACM Style]

Soaram Kim, Hyunggil Park, Giwoong Nam, Hyunsik Yoon, Jong Su Kim, Jin Soo Kim, Jeong-Sik Son, Sang-heon Lee, and Jae-Young Leem. 2013. Temperature-dependent Photoluminescence of Boron-doped ZnO Nanorods. Bulletin of the Korean Chemical Society, 34, 11, (2013), 3335-3339. DOI: 10.5012/bkcs.2013.34.11.3335.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)

ISSN(Print) 0253-2964
ISSN(Online) 1229-5949