Influence of different solvents used in film deposition of poly(9-vinylcarbazole) in OLED devices

Quimica nova

Costa, Ivan Rodrigues¹  Sonnenberg, Victor¹  Burini Junior, Elvo Calixto²  Onmori, Roberto Koji²  Correia, Fabio Conte²  Santos, Emerson Roberto²  Wang, Shu Hui² 

[1] Faculdade de Tecnologia de São Paulo, São Paulo, Brasil;Universidade de São Paulo, São Paulo, Brasil

关键词: organic solvent;    PVK;    OLED.;   

DOI  :  10.1590/S0100-40422014000100001

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

This work studiesthe influence of the film deposition process on light emission performance andon threshold voltage of OLEDs, with architecture glass/ITO/PEDOT:PSS/PVK/Alq3/Al.The commercial PVK was dissolved in different solvents such as: chloroform,tetrahydrofuran, 1,2,4-trichlorobenzene and trimethylpentane. OLEDs were characterizedby current-voltage and revealed a significant influence of the solvents, althoughall devices emitted green electroluminescence. A difference in threshold voltageup to 10 V was observed among OLEDs prepared from different solvents. The 1,2,4-trichlorobenzeneshowed best performance, presenting lowest treshold voltage (≈6 V), followed by tetrahydrofuran (≈8 V), trimethylpentane (≈14 V) and chloroform (≈16 V).

【 授权许可】

CC BY