Enhancement in performance of optoelectronic devices by optical-functional patterns

Yang Doo Kim, Joong Yeon Cho, Heon Lee

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

In this study, nanoimprint lithography (NIL) and a direct printing technique were used to create optical-functional structures on the substrate of organic light emitting diodes (OLEDs) and α-Si solar cell devices in order to cause light scattering and enhance their efficiencies. NIL can fabricate nanoscale patterns with a simple process and relatively low costs. Apart from low cost, the NIL-based direct patterning process also has advantages such as high throughput and high resolution. In addition, it enables the fabrication of inorganic or organic–inorganic hybrid nano-patterns on various substrates and can therefore be applied to diverse electronic devices to enhance their performance. The performances of the optoelectronic devices were improved after the formation of the optical-functional structure. In case of a thin-film solar cell on patterned glass, its conversion efficiency was increased up to 39.1 %, while the conversion efficiency of a thin-film solar cell on a patterned metal layer was increased up to 12 %. In case of OLEDs, the current and power efficiencies of OLEDs on planarized patterns were enhanced by 32 and 49 %, respectively.

Original languageEnglish
Pages (from-to)377-386
Number of pages10
JournalApplied Physics A: Materials Science and Processing
Volume121
Issue number2
DOIs
Publication statusPublished - 2015 Nov 1

Bibliographical note

Funding Information:
This research was supported by the Pioneer Research Center Program through the National Research Foundation of Korea funded by the Ministry of Science, ICT and Future Planning (NRF-2013M3C1A3063597). This research was supported by Nano·Material Technology Development Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education, Science and Technology (2012M3A7B4035323).

Publisher Copyright:
© 2015, Springer-Verlag Berlin Heidelberg.

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science

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