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CuI/CuPc被采用作为有机电致蓝光CBP:BCzVBi器件 的双空穴注入层。采用双空穴注入层后使得CBP:BCzVBi蓝光器件的启亮电压降低至 3.4 V,较采用CuPc单空穴注入层的CBP:BCzVBi蓝光器件低0.4 V。在驱动电流20 mA/cm2的情况下,与单空穴注入层器件 相比,采用该双空穴注入层结构使得器件电流效率提升约19%,亮度 增加约17%,驱动电压降低0.9 V。采用Fowler -Nordheim (F-N)隧穿注入理论对器件空穴注入电流的影响因素进行了分析,发现双空穴 注入层形成的能级台阶可以有效地改善发光器件的空穴注入效率,进而起到改善器件发光电 流效率和降低驱动电压的目的。 相似文献
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从化学转化及微生物降解2个方面综述了2,4,6-三硝基甲苯(TNT)资源化再利用的研究进展及应用。化学转化途径以TNT甲基氧化、硝基还原、取代反应等进行分类,系统地梳理了多样性的化学转化途径,结合资源化再利用从绿色环保、反应机理、反应效率、产物特性等多个维度进行了评价;微生物转化途径以需氧细菌、厌氧细菌和真菌代谢进行分类,较为全面的梳理了TNT微生物需氧代谢和厌氧代谢途径,汇总了相关微生物及代谢过程。最后对基于化学转化和生物转化的废旧TNT资源化再利用发展方向进行了展望:TNT化学转化将超越实验室研究阶段,绿色工艺研究及安全性将是本阶段研究的重点; TNT微生物转化依旧是研究重点,结合基因工程及现代分子生物学技术,有望为废旧TNT深度再利用提供新的解决方案。 相似文献
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Efficient blue fluorescence tandem organic light emitting device with a novel intermediate connector
A novel intermediate connector (IC) was formed which was composed of aluminum (Al, 3 nm)/1,4,5,8,9,11- hexaazatriphenylene-hexacarbonitrile (HAT-CN). The 3-nm-thick Al in the IC is certified to efficiently generate intrinsic charge carriers, and the HAT-CN is proved to work as the holes injection layer (HIL) for the corresponding electroluminescent (EL) unit simultaneously. This simply IC comprehensively takes advantage of the features of the HAT-CN so as to stack two single EL units without introducing extra material. In addition to a significant enhancement in luminance and current efficiency, a current efficiency (CE) of 10.2 cd/A and a luminance of 2 042 cd/m2 under the current density 20 mA/cm2 of this tandem organic light emitting device (TOLED) are yielded, which are notably almost the sum of that of the two single-unit devices. 相似文献
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