Double-layered organic electroluminescent device

Adachi, C., Tsutsui, T., and Saito, S., Confinement of charge carriers and molecular excitons within 5-nm-thick emitter layer in organ electroluminescent devices with a double hetero structure, Appl. Phys. Lett., 57, 531-533 (1990). 

Y. Liu, J. Guo, H. Zhang, and Y. Wang, Highly efficient white organic electroluminescence from a double-layer device based on a boron hydroxyphenylpyridine complex, Angew. Chem. Int. Ed., 41 182-184 (2002). 

Liu Y., Guo J.H., Zhang H.D., Wang Y., "Highly Efficient White Organic Electroluminescence from a Double-Layer Device Based on a Boron Hydroxyphenylpyridine Complex", Angeiv. ChertL Int. Ed., 41,2002,182... 

To attain electroluminescence from the PbBr-based layered perovskite, we employ the heterostmcture device where emissive layer of the PbBr-based layered perovskite are combined with organic carrier-transporting layers. In 1990, Adachi et. al. demonstrated that carriers and excitons to be confined within emissive layer (EML) in organic double heterostructure (DH) device consisting of electron-transporting layer (ETL), EML and hole-... 

Sharp electroluminescence due to exciton emission of PbBr-based layered perovskite was successfully observed in the heterostructure devices combined with PbBr-based layered perovskite as emissive material and organic carrier-transporting materials. In addition, lowering of drive voltage and enhancement of EL efficiency was attained in the double heterostructure device emptying copper phthalocyanine CuPc as hole-injection and holetransporting layer. 

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