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首页> 外文期刊>Japanese journal of applied physics >Enhancing the Efficiency and Contrast Ratio of White Organic Light-Emitting Diode Using Energy-Recyclable Photovoltaic Cells
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Enhancing the Efficiency and Contrast Ratio of White Organic Light-Emitting Diode Using Energy-Recyclable Photovoltaic Cells

机译：使用可回收能源的光伏电池提高白色有机发光二极管的效率和对比度

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摘要

We demonstrate that power recycling is feasible by using a semtransparent strip of Al electrode as an interconnecting layer to merge a white organic light-emitting device (WOLED) and an organic photovoltaic (OPV) cell. The device is called a photovoltaic organic light-emitting device (PVOLED). It has a glass/indium tin oxide (ITO)/copper phthalocyanine (CuPc)/4,4,4-tris(3-methyl-phenylphenylamino) triphenylamine (m-MTDATA):V_2O_5/2-N',N-bis(1-naphthyl)-W,N'-diphenyl-1'-biphenyl-4,4'-diamine (NPB)/4,4'-bis(carbazol-9-yl)biphenyl (CBP):bis[3,5-difluoro-2-(2-pyridyl) phenyl-(2-carboxypyridyl)] iridium(ll) (Flrpic):4-(dicyanomethylene)-2-f-butyl-6 (1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB)/4,7-diphenyl-1,10-phenanthroline (BPhen)/LiF/Ai/poly(3-hexylthiophene) (P3HT):[6,6]-phenyl-C_(61) butyric acid methyl ester (PCBM)/ V_2O_5/AI structure. A power recycling efficiency of 10.133% is achieved using the WOLED of the PVOLED operated at 9 V and a brightness of 2110cd/m~2 when the conversion efficiency of the OPV cell is 2.3%. We found that the power recycling efficiency decreases at a high brightness and a high applied voltage owing to an increase in the input power of the WOLED. A high efficiency (18.3cd/A) and a high contrast ratio (9.3) are obtained in the device operated at 2500 cd/m~2 under an ambient illumination of 24000 Ix. Reasonable white light emission with Commission Internationale De L'Eclairage (CIE) color coordinates of (0.32,0.44) at 20 mA/cm~2 and a slight color shift occur in spite of the high current density of 50mA/cm~2.
机译：我们证明，通过使用半透明的Al电极条作为互连层合并白色有机发光器件（WOLED）和有机光伏（OPV）电池，功率回收是可行的。该装置称为光伏有机发光装置（PVOLED）。它具有玻璃/氧化铟锡（ITO）/铜酞菁（CuPc）/ 4,4,4-三（3-甲基-苯基苯基氨基）三苯胺（m-MTDATA）：V_2O_5 / 2-N'，N-bis（ 1-萘基）-W，N'-二苯基-1'-联苯-4,4'-二胺（NPB）/ 4,4'-双（咔唑-9-基）联苯（CBP）：双[3,5 -二氟-2-（2-吡啶基）苯基-（2-羧基吡啶基）]铱（II）（Flrpic）：4-（二氰基亚甲基）-2-f-丁基-6（1,1,7,7-四甲基邻氯吡啶基- 9-烯基）-4H-吡喃（DCJTB）/ 4,7-二苯基-1,10-菲咯啉（BPhen）/ LiF / Ai /聚（3-己基噻吩）（P3HT）：[6,6]-苯基-C_ （61）丁酸甲酯（PCBM）/ V_2O_5 / AI结构。当OPV电池的转换效率为2.3％时，使用在9 V下工作的PVOLED的WOLED和2110cd / m〜2的亮度，可实现10.133％的功率回收效率。我们发现，由于WOLED的输入功率增加，功率回收效率在高亮度和高施加电压下会降低。在24000 Ix的环境照度下，以2500 cd / m〜2的速率工作的设备可获得高效率（18.3cd / A）和高对比度（9.3）。尽管电流密度为50mA / cm〜2，但国际照明委员会（CIE）在20 mA / cm〜2时的色坐标为（0.32,0.44）时仍能发出合理的白光，并且会出现轻微的色偏。

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  • 来源
    《Japanese journal of applied physics》 |2012年第3issue1期|p.032102.1-032102.6|共6页
  • 作者

    Meiso Yokoyama; Chung-Ming Wu; Shui-Hsiang Su;

  • 作者单位

    Department of Electronic Engineering, I-Shou University, Kaohsiung 84001, Taiwan;

    Department of Electronic Engineering, I-Shou University, Kaohsiung 84001, Taiwan;

    Department of Electronic Engineering, I-Shou University, Kaohsiung 84001, Taiwan;

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