Kim E, Cho H, Kim K, Koh TW, Chung J, Lee J, Park Y, Yoo S. A facile route to efficient, low-cost flexible organic light-emitting diodes: utilizing the high refractive index and built-in scattering properties of industrial-grade PEN substrates.
ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015;
27:1624-1631. [PMID:
25645389 DOI:
10.1002/adma.201404862]
[Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Revised: 12/14/2014] [Indexed: 06/04/2023]
Abstract
An industrial-grade polyethylene naphthalate (PEN) substrate is explored as a simple, cost-effective platform for high-efficiency organic light-emitting diodes (OLEDs). Its high refractive index, combined with the built-in scattering properties inherent to the industrial-grade version, allows for a significant enhancement in outcoupling without any extra structuring or special optical elements. Flexible, color-stable OLEDs with efficiency close to 100 lm W(-1) are demonstrated.
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