Please use this identifier to cite or link to this item:
|Title:||Low temperature aqueous solution route to reliable p-type doping in ZnO with K: Growth chemistry, doping mechanism, and thermal stability|
|Authors:||Tay, C.B. |
|Citation:||Tay, C.B., Tang, J., Nguyen, X.S., Huang, X.H., Chai, J.W., Venkatesan, V.T., Chua, S.J. (2012-11-15). Low temperature aqueous solution route to reliable p-type doping in ZnO with K: Growth chemistry, doping mechanism, and thermal stability. Journal of Physical Chemistry C 116 (45) : 24239-24247. ScholarBank@NUS Repository. https://doi.org/10.1021/jp3070757|
|Abstract:||In this paper, we identified how the growth environment chemistry can critically influence the type and nature of the incorporated K defect in ZnO films grown using the aqueous solution route, which explains the switching between p- and n-type conductivities under different doping or thermal annealing conditions. This was achieved by relating the growth environment to the structural, optical, and electrical characteristics of the films. The thermal behavior of these defects up to 700 °C confirms the proposed doping mechanism. It is found that the best route to realizing p-type conductivity is through minimizing the amount of Ki and KZn-Ki complexes because films with high concentrations of Ki have a slow p-type recovery caused by the slow out-diffusion of Ki. The highest hole concentrations for as-grown films and those that were annealed at 700 °C for 30 min were 2.6 × 1016 and 3.2 × 10 17 cm-3, respectively. The upper limit for p-type doping using this route appears to be about mid-1017 cm-3. Our results show that the low temperature aqueous solution synthesis route of ZnO:K is a promising solution toward reliable p-type conductivity for future device applications. © 2012 American Chemical Society.|
|Source Title:||Journal of Physical Chemistry C|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Nov 13, 2018
WEB OF SCIENCETM
checked on Nov 5, 2018
checked on Oct 19, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.