Temperature-induced irreversible change of ZnO optical energy gap

Document Type

Conference Proceeding

Publication Date



It is generally recognized that the change of ZnO optical properties due to high-temperature treatment is reversible. However, herein, it is reported that high-temperature treatment in air caused an irreversible decrease in ZnO optical energy gap (E g). The irreversible decrease in E g was enhanced with increasing treatment temperature. Furthermore, it was found that the irreversible decrease in E g can be attributed to the enlargement of ZnO crystal particles. © 2011 American Chemical Society.

Publication Title

Industrial and Engineering Chemistry Research