Giant enhancement of top emission from ZnO thin film by nano-patterned Pt

• Main Authors: Liu, K. W., Tang, Y. D., Cong, Chunxiao, Sum, Tze Chien, Huan, Alfred Cheng Hon, Shen, Zexiang, Wang, Lan, Jiang, F. Y., Sun, Xiaowei, Sun, Handong
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2010
• Subjects: DRNTU::Engineering::Materials::Photonics and optoelectronics materials
• Online Access: https://hdl.handle.net/10356/93932; http://hdl.handle.net/10220/6225; http://sfxna09.hosted.exlibrisgroup.com:3410/ntu/sfxlcl3?sid=metalib:EBSCO_APH&id=doi:&genre=&isbn=&issn=00036951&date=2009&volume=95&issue=2&spage=029903&epage=&aulast=Liu&aufirst=%20K%20%20W&auinit=&title=Applied%20Physics%20Letters
• Institution: Nanyang Technological University

The authors report the enhancement of the bandgap emission from ZnO thin films by surface modification and surface plasmon cross-coupling. 12-fold and twofold enhancements of bandgap emission from the metal side of ZnO film were observed by sputtering Pt nanopattern and Pt film onto ZnO film, respectively. Time-resolved photoluminescence indicates that the decay time is slowed down by Pt capping, contrary to common observations. The “abnormal” phenomena are interpreted by considering both the surface modification and surface plasmon coupling.