2008•SID Symposium Digest of Technical PapersRequires access
22.2: Printable Phosphorescent Organic Light Emitting Devices
Sean Xia, K. O. Cheon, Jason Brooks, M. Rothman, Tan Ngo, Patrick Hett, Raymond C. Kwong, M. Inbasekaran, Julie J. Brown, Takuya Sonoyama, Masaki Ito, Shunichi Seki, Satoru Miyashita
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Abstract
Abstract This paper reports on a new approach to full‐color printable phosphorescent organic light emitting devices (P 2 OLEDs). Unlike conventional solution processed OLEDs that contain conjugated polymers in the emissive layer, the P 2 OLEDs emissive layer consists of small molecule hosts and dopants. We present a red P 2 OLED that exhibits luminous efficiency of 9 cd/A and a projected lifetime of 53,000 hrs from an initial luminance of 500 cd/m 2 , a green P 2 OLED with luminous efficiency of 35 cd/A and a projected lifetime 52,000 hrs from an initial luminance of 1000 cd/m 2 , a light blue P 2 OLED with luminous efficiencies of 18 cd/A and a projected lifetime 3,000 hrs from an initial luminance of 500 cd/m 2 , and a blue P 2 OLED with luminous efficiencies of 6 cd/A and a projected lifetime 1,000 hrs from an initial luminance of 500 cd/m 2 .