Your browser doesn't support javascript.
loading
Interphase-Controlled Inkjet Printing of MicroInlaid OLEDs: Effects of Solvent- and Solute-Polymer Interactions.
Park, JaeWoo; Kim, Wonsun; Kim, MyeongGyu; Jeong, HyeRyun; Lee, Kimin; Kil, Juneyoung; Yang, Sui; Choi, Eun Ha; Park, Byoungchoo.
Afiliación
  • Park J; Department of Plasma-Bio Display, Kwangwoon University, Seoul 01897, Republic of Korea.
  • Kim W; Materials Science and Engineering, School for Engineering of Matter Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States.
  • Kim M; Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Republic of Korea.
  • Jeong H; Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Republic of Korea.
  • Lee K; Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Republic of Korea.
  • Kil J; Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Republic of Korea.
  • Yang S; Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Republic of Korea.
  • Choi EH; Materials Science and Engineering, School for Engineering of Matter Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States.
  • Park B; Department of Plasma-Bio Display, Kwangwoon University, Seoul 01897, Republic of Korea.
ACS Appl Mater Interfaces ; 16(33): 43762-43773, 2024 Aug 21.
Article en En | MEDLINE | ID: mdl-39106292
ABSTRACT
Inkjet printing, a highly promising technique for the cost-effective fabrication of large-scale organic light-emitting devices (OLEDs), typically necessitates the intricate alignment of precisely patterned insulating layers. Recently, we introduced a unique single-step inkjet printing process that produces well-patterned microinlaid spots of functional compounds through insulating polymer layers. This approach exploits lateral phase separation between the solute of functional compounds and the polymer, allowing the simultaneous spatial etching of the polymer and the infilling of the solute using a single inkjet-printed sessile droplet. Here, we demonstrate that the interaction between the solvent and polymer, as well as the solute and polymer, critically determines the precision and efficiency of printing. This is particularly evident when using either the insulating poly(vinylpyridine) isomer of poly(4-vinylpyridine) (P4VP) or poly(2-vinylpyridine) (P2VP) with chloroform as a solvent, which allows for a detailed examination of these interactions based on certain solubility parameters. Micro-Raman spectroscopy reveals that the self-organizing capability of the microinlaid spots with P4VP is superior to that with P2VP. This is due to the fact that P2VP shows higher affinity to the solvent and causes imperfect phase separation as compared to P4VP. As a result, a performance evaluation demonstrates enhanced device performance for inkjet-printed green micro-OLEDs with P4VP, exhibiting a higher external quantum efficiency of 3.3% compared to that of 2.3% achieved with P2VP. These findings elucidate the important roles of solvent-polymer and solute-polymer interactions in the inkjet printing process, leading to interfacial control of inkjet printing technique for the cost-effective production of high-performance and high-resolution micro-OLEDs.
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos