...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Organic Electronics >Efficient and color-stable solid-state white light-emitting electrochemical cells employing red color conversion layers
【24h】

Efficient and color-stable solid-state white light-emitting electrochemical cells employing red color conversion layers

机译：使用红色转换层的高效且颜色稳定的固态白色发光电化学电池

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We report efficient and color-stable white light-emitting electrochemical cells (LECs) by combining single-layered blue-emitting LECs with red-emitting color conversion layers (CCLs) on the inverse side of the glass substrate. By judicious choosing of the red-emitting dye doped in CCLs, good spectral overlap between the absorption spectrum of the red-emitting dye and the emission spectrum of the blue-emitting emissive material results in efficient energy transfer and thus sufficient down-converted red emission at low doping concentrations of the red-emitting dye in the CCLs. Low doping concentration is beneficial in reducing self-quenching of the red-emitting dye, rendering efficient red emission. Electroluminescent (EL) measurements show that the peak external quantum efficiency and the peak power efficiency of the white LECs employing red CCLs reach 5.93% and 15.34 lm W~(-1), respectively, which are among the highest reported for white LECs. Furthermore, these devices exhibit bias-insensitive white EL spectra, which are required for practical applications, due to nondoped emissive layers. These results reveal that single-layered blue-emitting LECs combined with red-emitting CCLs are one of the potential candidates for efficient and color-stable white light-emitting devices.
机译：我们通过将单层发蓝光的LEC与玻璃基板反面上的发红光的颜色转换层（CCL）相结合，报告了高效且颜色稳定的发白光的电化学电池（LEC）。通过明智地选择掺入CCL中的红色发光染料，红色发光染料的吸收光谱与蓝色发光​​材料的发射光谱之间的良好光谱重叠可实现有效的能量转移，从而产生足够的下转换红色发射在CCL中掺杂低浓度的红色发光染料。低掺杂浓度有利于减少发红染料的自猝灭，从而有效地发出红光。电致发光（EL）测量表明，采用红色CCL的白色LEC的峰值外部量子效率和峰值功率效率分别达到5.93％和15.34 lm W〜（-1），是报道的白色LEC的最高值。此外，由于未掺杂发射层，这些器件还显示出偏置不敏感的白色EL光谱，这是实际应用所必需的。这些结果表明，与发红光的CCL结合使用的单层发蓝光的LEC是高效且颜色稳定的白光发射设备的潜在候选者之一。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号