A mini Interactive Web Course on
CHALCOGENIDE GLASSES

January 17 - March 21, 2011

Course Information

This course was taught during the Spring semester of 2011. It provided a broad overview of chalcogenide glasses, which are technologically important, high-tech sub-class of inorganic glasses that exhibit numerous unusual properties not found in common (oxide) glasses. The course focused on distinctive characteristics (structure and properties) of chalcogenide glasses and how they lead to broad range of existing and potential applications in photonics, electronics, ionics, etc.

Instructors

Professor Yong Gyu Choi, IMI-NFG Sabbatical Faculty (on leave from Korea Aerospace University, South Korea)
Professor Himanshu Jain, Materials Science and Engineering, Lehigh University

Text

"Non-Crystalline Chalcogenides" by Mihai A. Popescu
Published by Kluwer Academic Publishers (ISBN: 1-4020-0359-5)
Useful but not necessary to purchase.

Main Topics

• Fundamental aspects of chalcogenide glass: brief history, fabrication methods
• Characteristic properties
• Glass forming systems
• Structure of main systems
• Background of relevant applications such as thin film solar cells, thermoelectric devices, electrical switching devices, solid electrolytes, infrared optics, etc.
• Photonics applications e.g. as IR transmission medium for sensors, lasers, amplifiers; nonlinear optical devices; memory; optical waveguides; photoresists; etc.
• Electronics applications e.g. electrical memory based on phase-change; switching devices
• Ionics applications e.g. fast ion conductors for battery and fuel cell, grayscale lithography, switching devices

Schedule and Lecture Topics

Lecture	Lecture Topic All lectures will be presented by Prof. Yong Gyu Choi (unless noted otherwise)	Notes	video
1	Syllabus Introduction Characteristics and fabrication	pdf pdf	video
2	Structure 1: glass formation and structure models	pdf	video
3	Structure 2: structure of some representative ChGs Homework Assignment 1:	pdf Answers	video
4	Property 1: physico-chemical properties	pdf	video
5	Property 2: photo-induced effects	pdf	video
6	Photonics applications 1- part a: IR transmitting medium (slides 1-14)	pdf	part a: video
7	Photonics applications 1- part b: IR transmitting medium (slides 15-27) Homework Assignment 2:	same as above Answers	part b: video
8	Photonics applications 2: ion-doped ChGs	pdf	video
9	Photonics applications 3: optical nonlinearity in ChGs	pdf	live lecture video re-recorded video
10	Photonics applications 4: waveguide fabrication	pdf	video
11	Photonics applications 5: photoresists (Prof. H. Jain); Lithography References: "Glasses for Lithography", Jain, Vlcek "Chalcogenide glass e-beam and photoresists for ultra thin grey scale patterning", Kovalskiy et al	pdf	video
12	Ionics applications 1: Models of Ionic Conduction in Chalcogenide Glasses. (Prof S. Martin)	pdf	video
13 (part 1)	Ionics applications 2 part 1: Survey of Fast Ion Conduction on Chalcogenide Glasses. (Prof S. Martin)	pdf	video
13 (part 2)	Ionics applications 2 part 2 (continuation of lecture 13): Survey of Fast Ion Conduction on Chalcogenide Glasses. (Prof S. Martin)	same as above	video
14	Electronics applications 1: phase change memory	pdf	video
15	Electronics applications 2: switching devices	pdf	video

Contact Information

Instructors:
Professor Yong Gyu Choi (ykc310@lehigh.edu)
IMI-NFG, Lehigh University. Sabbatical Faculty (currently on leave from Korea Aerospace University, South Korea).
Professor Himanshu Jain (h.jain@lehigh.edu)
IMI-NFG and Dept. of Materials Science and Engineering, Lehigh University
Professor Steve Martin (swmartin@iastate.edu)
Depart. of Material Science and Engineering

Technical Support:
David White (WDAVID@clemson.edu)
Clemson University

Course Support:
Dr. William Heffner (wrh304@lehigh.edu)
Associate Director, IMI-NFG, Lehigh Unversity