Harness, Dickey & Pierce, P.L.C.
Organic light-emitting device
An organic light-emitting device (OLED) includes a first electrode, a second electrode, an emission layer between the first electrode and the second electrode and including an electron-transporting host and a hole-transporting host, a hole transport region between the first electrode and the emission layer and including a hole transport layer, and an electron transport region between the emission layer and the second electrode and including an electron transport layer, wherein the OLED satisfies Equations 1 and 2 below: 0.75 eV≤|LUMOH(ET)−LUMOH(HT)|≤0.90 eV  <Equation 1>|E(S1,H(ET))−E(S1,H(HT))|<0.15 eV  <Equation 2>     
Samsung Electronics Co., Ltd.
H C C H H H H H H
H01L C09K C09K H01L H01L H01L H01L H01L H01L
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Banglin Sangdong Seungyeon Jiwhan Sangyeob Hyeonho
Lee Kim Kwak Kim Lee Choi