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国家自然科学基金(60877022)

作品数:3 被引量:1H指数:1
相关作者:冉广照尤力平文杰徐万劲更多>>
相关机构:北京大学更多>>
发文基金:国家自然科学基金国家重点基础研究发展计划更多>>
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Optimizing ef?ciency of polycrystalline p-Si anode organic light-emitting diode被引量:1
2016年
Optimizing efficiency of organic light-emitting diodes(OLEDs) with a structure of Al/glass/nanometerthick polycrystalline p-Si(NPPS) anode/SiO_2/N'-bis-(1-naphthl)-diphenyl-1,1'-biphenyl-4,4'-diamine(NPB)/tris(8-hydroxyquinoline) aluminum(Alq_3)/4,7-diphenyl^(-1),10-phenanthroline(BPhen):Cs_2CO_3/Sm/Au were studied. The NPPS anodes were fabricated by magnetron sputtering(MS)Si and Ni layers followed by Ni-induced crystallization of the amorphous Si layers. By adjusting the resistivity of the p-Si target adopted in MS, the electroluminescent efficiency of the OLED was optimized. When the resistivity of the p-Si target is 0.01 Ω·cm, the current and power efficiency of the NPPS anode OLED reach maximum values of 6.7 cd ·A^(-1)and 4.64 lm ·W^(-1), respectively, which are 2.7 and 3.1 times those of the resistivity-optimized bulk p-Si anode counterpart and 2.9 and 3.7 times those of the indium tin oxide(ITO) anode counterpart, and then, the physical reasons were discussed.
Jian-Xing LuoWei WangHu MengWan-Jin XuGuo-Gang Qin
关键词:ELECTROLUMINESCENCE
Efficient 1.3-μm electroluminescence from high concentration boron-diffused silicon p^+-n junctions
2009年
Etectroluminescence peaking at 1.3 μm is observed from high concentration boron-diffused silicon p^+-n junctions. This emission is efficient at low temperature with a quantum efficiency 40 times higher than that of the band-to-band emission around 1.1 μm, but disappears at room temperature. The 1.3-μm band possibly originates from the dislocation networks lying near the junction region, which are introduced by high concentration boron diffusion.
陈挺冉广照尤力平赵华波秦国刚
关键词:BORONELECTROLUMINESCENCE
Ag纳米颗粒对富Ag二氧化硅薄膜电致发光谱的影响
2011年
利用磁控溅射和热退火在硅衬底上制备了Ag纳米颗粒镶嵌的氧化硅薄膜(SiO2∶Ag),制作了电致发光结构ITO/SiO2∶Ag/p-Si,观测到了可见区的电致发光。发现薄膜中的Ag纳米颗粒不仅成倍地提高器件的发光强度,还明显地移动电致发光的峰位。Ag含量越高,颗粒越大,发光峰位越红移。氧化硅中的发光中心与纳米Ag间的电磁相互作用,可用来定性解释这一实验结果。这种效应可把低效发光的材料转换为相对高效的发光材料。
冉广照文杰尤力平徐万劲
关键词:电致发光AG纳米颗粒
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