Erratum to: J Sol-Gel Sci Technol (2013) 67:50–55 DOI 10.1007/s10971-013-3049-y

The original publication of this article was submitted and published without the names of four co-authors, Shang-Hsuan Wu, Shien-Uang Jen, Wei-Chun Cheng, Y. C. Chang, in the author group. This has been corrected with this erratum.

Also, the authors would like to update the acknowledgments section which is given below.

Acknowledgments

This research was supported by University Grants Commission (UGC), Govt. of India, New Delhi, for financial assistance through a minor research project [Ref. No. 39-987/2010 (SR)]. We are also very thankful to Research Centre for Applied Sciences, Academia Sinica, Taipei, Taiwan, for providing characterization facilities. Dr. Thangavel is also thankful to Research Centre for Applied Sciences, Academia Sinica, Taipei, Taiwan, for providing financial support.

In the original publication, there was an error in the caption of Fig. 3. The corrected version of the caption is given below.

Fig. 3 a Raman spectra of Na doped ZnO thin films annealed at 500 °C. b Polarized Raman spectra of Na doped ZnO thin films with the incident light parallel (instead of perpendicular) to the films. c Polarized Raman spectra of Na doped ZnO thin films with the incident light perpendicular (instead of parallel) to the films