Band Offsets and Interface State Densities in Crystalline and Amorphous Oxide Systems for Photonics, Sensors and Electronics

用于光子学、传感器和电子学的晶体和非晶氧化物系统中的能带偏移和界面态密度

• 批准号: 1159682
• 负责人: Stephen Pearton
• 金额: $ 32.55万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-05-15 至 2016-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1159682&HistoricalAwards=false
• 关键词: Band; Offsets; Interface; State; Densities

This project is jointly funded by the Electronics, Photonics, and Magnetic Devices Program (EPMD) in the Division of Electrical, Communications and Cyber Systems (ECCS) and the Electronic and Photonic Materials Program (EPM) in the Division of Materials Research (DMR).Technical Description: The research objective of this project aims to develop a better understanding of the fundamental materials properties of the band offsets and interfaces between dielectrics and semiconductors. It covers investigation of the band offsets for different dielectrics (SiNX, Sc2O3 and (CeTb)MgAl11O19) on crystalline ZnO, CdZnO, ZnMgO and also for the latter two on a-IGZO and measurement of interface state densities and thermal stability of all these dielectrics on a-IGZO. Optical and electrical techniques are used to characterize the band offsets, bandgaps and interface state densities.Non-technical Description: Crystalline and amorphous electronic oxides are gaining interest for gas and chemical sensing, ultra violet light-emitting diodes for solid state lighting, flat-panel, flexible and touch-screen displays and solar cells. The importance of transparent conducting oxides in these products has led to a surge of research in recent years to discover new materials, lower the costs of manufacture and improve properties. Oxide-based thin film transistors have great potential for realizing a roll-to-roll display. If this can be realized, it may also create new applications in heads-up displays, windshields, electronic books or light weight computers and eventually change the entire display industry. This project is designed to develop a new class of solid-state materials that can be made at low temperatures, allowing their use on cheap substrates like paper and plastic. In addition, cross-disciplinary education activities introduce the public to these exotic and enabling materials. The PI engages in undergraduate and graduate mentoring, K-12 outreach, conference symposia organization, and writing a textbook.

该项目由电气、通信和网络系统部（ECCS）的电子、光子学和磁器件计划（EPMD）和材料研究部（DMR）的电子和光子材料计划（EMPM）共同资助。技术描述：本计画的研究目标是发展对能带偏移和界面的基本材料性质的更好理解半导体和半导体之间的关系。研究了不同掺杂（SiNX、Sc_2O_3和（CeTb）MgAl_（11）O_（19））在ZnO、CdZnO、ZnMgO晶体上的能带偏移以及后两者在a-IGZO上的能带偏移，并测量了所有这些掺杂在a-IGZO上的界面态密度和热稳定性。光学和电学技术用于表征能带偏移、带隙和界面态密度。非技术描述：晶体和非晶体电子氧化物在气体和化学传感、固态照明用紫外发光二极管、平板、柔性和触摸屏显示器以及太阳能电池等领域的应用越来越受到关注。透明导电氧化物在这些产品中的重要性导致近年来研究激增，以发现新材料，降低制造成本并改善性能。基于氧化物的薄膜晶体管具有实现卷对卷显示器的巨大潜力。如果这一点能够实现，它还可能在抬头显示器、挡风玻璃、电子书或轻型计算机中创造新的应用，并最终改变整个显示器行业。 该项目旨在开发一种新型的固态材料，可以在低温下制造，允许它们在纸和塑料等廉价基材上使用。 此外，跨学科的教育活动向公众介绍了这些异国情调和提高能力的材料。PI从事本科生和研究生指导，K-12推广，会议研讨会组织和编写教科书。