通过将三元体系单斜相结构弛豫铁电单晶铌铟镁酸铅–钛酸铅[Pb(In1/2Nb1/2)O3–Pb(Mg1/3Nb2/3)O3–Pb Ti O3(PIN–PMN–PT)]的准同型相界组分0.24PIN–0.43PMN–0.33PT单晶沿[011]c方向极化成准单畴态,研究了该单晶的电光性能。采用改进...通过将三元体系单斜相结构弛豫铁电单晶铌铟镁酸铅–钛酸铅[Pb(In1/2Nb1/2)O3–Pb(Mg1/3Nb2/3)O3–Pb Ti O3(PIN–PMN–PT)]的准同型相界组分0.24PIN–0.43PMN–0.33PT单晶沿[011]c方向极化成准单畴态,研究了该单晶的电光性能。采用改进的Mach-Zehnder干涉系统,选用波长为632.8nm激光对单晶的电光系数张量?13、?23和?33进行测量及分析。根据实验及计算结果,排除由压电效应引起晶体在通光方向的伸缩,电光系数张量?13=–21.8 pm/V,?23=64.7 pm/V,?33=85.8 pm/V。测试结果表明,单晶的电光系数具有较高的?23和?33分量,在实际的电光器件应用中,可以在保证单晶透过率的情况下对这两个分量进行利用。展开更多
Blue top-emitting organic light-emitting devices （TEOLEDs） are demonstrated by employing Alq3 as phase shift adjustment layer （PSAL） to increase the phase shift on reflection of the top electrode within a range, w...Blue top-emitting organic light-emitting devices （TEOLEDs） are demonstrated by employing Alq3 as phase shift adjustment layer （PSAL） to increase the phase shift on reflection of the top electrode within a range, which also improves the light out-coupling. By adjusting the thickness of P SAL, the CIEx,y of devices, which utilize 2, 7-Di-pyrenyl-9, 9-spiro-bifluorene （DPSF） as emitting layer, changes from （0.16, 0.50） to （0.18, 0.37）. The maximnum current efficiency of 7.1 cd/A is acquired under 4.5 V with an increasing luminance of 139 cd/m^2. Compared with adjusting the total thickness of organic layer, it is more beneficial for achieving blue TEOLEDs with high efficiency.展开更多
文摘Blue top-emitting organic light-emitting devices （TEOLEDs） are demonstrated by employing Alq3 as phase shift adjustment layer （PSAL） to increase the phase shift on reflection of the top electrode within a range, which also improves the light out-coupling. By adjusting the thickness of P SAL, the CIEx,y of devices, which utilize 2, 7-Di-pyrenyl-9, 9-spiro-bifluorene （DPSF） as emitting layer, changes from （0.16, 0.50） to （0.18, 0.37）. The maximnum current efficiency of 7.1 cd/A is acquired under 4.5 V with an increasing luminance of 139 cd/m^2. Compared with adjusting the total thickness of organic layer, it is more beneficial for achieving blue TEOLEDs with high efficiency.
