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

Química Nova

Burini Junior, Elvo Calixto¹  Faculdade de Tecnologia de São Paulo, São Paulo, Brasil¹  Costa, Ivan Rodrigues¹  Universidade de São Paulo, São Paulo, Brasil¹  Onmori, Roberto Koji¹  Correia, Fabio Conte¹  Sonnenberg, Victor¹  Santos, Emerson Roberto¹  Wang, Shu Hui¹ 

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 studies the influence of the film deposition process on light emission performance and on 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 characterized by current-voltage and revealed a significant influence of the solvents, although all devices emitted green electroluminescence. A difference in threshold voltage up to 10 V was observed among OLEDs prepared from different solvents. The 1,2,4-trichlorobenzene showed best performance, presenting lowest treshold voltage (≈ 6 V), followed by tetrahydrofuran (≈ 8 V), trimethylpentane (≈ 14 V) and chloroform (≈ 16 V).

【 授权许可】

Unknown