Annual Report 2007 - (Page 37) A new technique developed by GTRI researchers for encapsulating OLEDs improves device lifetimes. method. “We chose a passivation coating process that could be performed at room temperature so that the organic material remained intact,” said Tong. The researchers selected advanced ion assisted deposition, which utilizes reactive ions to deposit a high-density, pinhole-free thin silicon oxynitride (SiON) film on the OLED surface. “Ideally, the film should be as thin as possible, but if it’s too thin, a pinhole or other defect could appear and cause a problem,” explained Tong. “We found that a film of 50-200 nanometer thickness was perfect.” During testing, the SiON-encapsulated OLEDs showed no sign of degradation after seven months in an open-air environment, while the OLEDs without the coating degraded completely in less than two weeks under the same conditions. When Tong conducted accelerating aging tests in an environmental chamber that maintained a temperature of 50 degrees Celsius and 50 percent relative humidity, the OLEDs encapsulated with SiON films showed little degradation for at least two weeks. The OLEDs without encapsulation, however, decomposed immediately. “We’ve demonstrated that this deposition process improves the lifetime of the OLEDs by blocking the intrusion of moisture, so now we’re hoping to work with industry partners to develop a mass production process for our encapsulation technique,” added Tong. www.gtri.gatech.edu http://www.gtri.gatech.edu
Table of Contents Feed for the Digital Edition of Annual Report 2007 Annual Report 2007 Contents From the Director Research at GTRI Defense and Security Health and Human Systems Energy and Environment Manufacturing Technologies Information and Communication Technologies GTRI Around the World Interdisciplinary Research Centers The Laboratories of GTRI Georgia Tech Ireland GTRI by the Numbers GTRI and Georgia Tech Supporting Breakthrough Research GTRI Professional Education The People of GTRI Annual Report 2007 Annual Report 2007 - Annual Report 2007 (Page 1) Annual Report 2007 - Annual Report 2007 (Page 2) Annual Report 2007 - Contents (Page 3) Annual Report 2007 - Contents (Page 4) Annual Report 2007 - Contents (Page 5) Annual Report 2007 - From the Director (Page 6) Annual Report 2007 - Research at GTRI (Page 7) Annual Report 2007 - Defense and Security (Page 8) Annual Report 2007 - Defense and Security (Page 9) Annual Report 2007 - Defense and Security (Page 10) Annual Report 2007 - Defense and Security (Page 11) Annual Report 2007 - Defense and Security (Page 12) Annual Report 2007 - Defense and Security (Page 13) Annual Report 2007 - Defense and Security (Page 14) Annual Report 2007 - Defense and Security (Page 15) Annual Report 2007 - Defense and Security (Page 16) Annual Report 2007 - Defense and Security (Page 17) Annual Report 2007 - Health and Human Systems (Page 18) Annual Report 2007 - Health and Human Systems (Page 19) Annual Report 2007 - Health and Human Systems (Page 20) Annual Report 2007 - Health and Human Systems (Page 21) Annual Report 2007 - Health and Human Systems (Page 22) Annual Report 2007 - Health and Human Systems (Page 23) Annual Report 2007 - Energy and Environment (Page 24) Annual Report 2007 - Energy and Environment (Page 25) Annual Report 2007 - Energy and Environment (Page 26) Annual Report 2007 - Energy and Environment (Page 27) Annual Report 2007 - Energy and Environment (Page 28) Annual Report 2007 - Energy and Environment (Page 29) Annual Report 2007 - Energy and Environment (Page 30) Annual Report 2007 - Energy and Environment (Page 31) Annual Report 2007 - Manufacturing Technologies (Page 32) Annual Report 2007 - Manufacturing Technologies (Page 33) Annual Report 2007 - Manufacturing Technologies (Page 34) Annual Report 2007 - Manufacturing Technologies (Page 35) Annual Report 2007 - Manufacturing Technologies (Page 36) Annual Report 2007 - Manufacturing Technologies (Page 37) Annual Report 2007 - Information and Communication Technologies (Page 38) Annual Report 2007 - Information and Communication Technologies (Page 39) Annual Report 2007 - Information and Communication Technologies (Page 40) Annual Report 2007 - Information and Communication Technologies (Page 41) Annual Report 2007 - Information and Communication Technologies (Page 42) Annual Report 2007 - Information and Communication Technologies (Page 43) Annual Report 2007 - GTRI Around the World (Page 44) Annual Report 2007 - Interdisciplinary Research Centers (Page 45) Annual Report 2007 - The Laboratories of GTRI (Page 46) Annual Report 2007 - The Laboratories of GTRI (Page 47) Annual Report 2007 - Georgia Tech Ireland (Page 48) Annual Report 2007 - Georgia Tech Ireland (Page 49) Annual Report 2007 - GTRI by the Numbers (Page 50) Annual Report 2007 - GTRI and Georgia Tech (Page 51) Annual Report 2007 - Supporting Breakthrough Research (Page 52) Annual Report 2007 - GTRI Professional Education (Page 53) Annual Report 2007 - The People of GTRI (Page 54) Annual Report 2007 - The People of GTRI (Page 55) Annual Report 2007 - The People of GTRI (Page 56) Annual Report 2007 - The People of GTRI (Page 57) Annual Report 2007 - The People of GTRI (Page 58) Annual Report 2007 - The People of GTRI (Page 59) Annual Report 2007 - The People of GTRI (Page 60)
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