Efficient Photon Extraction in Top-Emission Organic Light-Emitting Devices Based on Ampicillin Microstructures

Efficient Photon Extraction in Top-Emission Organic Light-Emitting Devices Based on Ampicillin Microstructures

© 2022 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 34(2022), 32 vom: 28. Aug., Seite e2202866
1. Verfasser: Kim, Dong Hyun (VerfasserIn)
Weitere Verfasser: Lee, Chang Min, Islam, Amjad, Choi, Dong Hyun, Jeong, Geon-Woo, Kim, Tae Wook, Cho, Hyun Woo, Kim, Yeong Beom, Shah, Syed Hamad Ullah, Park, Min Jae, Kim, Chul Hoon, Lee, Hyun Jae, Lee, Jae Woo, Bang, Seain, Bae, Tae-Sung, Park, Jong Bae, Yu, Seung Min, Kang, Yong-Cheol, Park, Juyun, Park, Myeongkee, Jeong, Yeonsu, Lee, Sang Geul, Jin, Jong Sung, Kim, Kyoung-Ho, Sujak, Muhammad, Moon, Surk-Suik, Park, Sanghyuk, Song, Myung Kwan, Kim, Chang-Su, Ryu, Seung Yoon
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article J-/H-aggregated excitons micro-photoluminescence microcavity ampicillin-microstructure multiple scattering top-emission organic light-emitting diodes wave-guided mode
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100 1 |a Kim, Dong Hyun  |e verfasserin  |4 aut 
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520 |a The desire to enhance the efficiency of organic light-emitting devices (OLEDs) has driven to the investigation of advanced materials with fascinating properties. In this work, the efficiency of top-emission OLEDs (TEOLEDs) is enhanced by introducing ampicillin microstructures (Amp-MSs) with dual phases (α-/β-phase) that induce photoluminescence (PL) and electroluminescence (EL). Moreover, Amp-MSs can adjust the charge balance by Fermi level (EF ) alignment, thereby decreasing the leakage current. The decrease in the wave-guided modes can enhance the light outcoupling through optical scattering. The resulting TEOLED demonstrates a record-high external quantum efficiency (EQE) (maximum: 68.7% and average: 63.4% at spectroradiometer; maximum: 44.8% and average: 42.6% at integrating sphere) with a wider color gamut (118%) owing to the redshift of the spectrum by J-aggregation. Deconvolution of the EL intensities is performed to clarify the contribution of Amp-MSs to the device EQE enhancement (optical scattering by Amp-MSs: 17.0%, PL by radiative energy transfer: 9.1%, and EL by J-aggregated excitons: 4.6%). The proposed TEOLED outperforms the existing frameworks in terms of device efficiency 
650 4 |a Journal Article 
650 4 |a J-/H-aggregated excitons 
650 4 |a micro-photoluminescence 
650 4 |a microcavity ampicillin-microstructure 
650 4 |a multiple scattering 
650 4 |a top-emission organic light-emitting diodes 
650 4 |a wave-guided mode 
700 1 |a Lee, Chang Min  |e verfasserin  |4 aut 
700 1 |a Islam, Amjad  |e verfasserin  |4 aut 
700 1 |a Choi, Dong Hyun  |e verfasserin  |4 aut 
700 1 |a Jeong, Geon-Woo  |e verfasserin  |4 aut 
700 1 |a Kim, Tae Wook  |e verfasserin  |4 aut 
700 1 |a Cho, Hyun Woo  |e verfasserin  |4 aut 
700 1 |a Kim, Yeong Beom  |e verfasserin  |4 aut 
700 1 |a Shah, Syed Hamad Ullah  |e verfasserin  |4 aut 
700 1 |a Park, Min Jae  |e verfasserin  |4 aut 
700 1 |a Kim, Chul Hoon  |e verfasserin  |4 aut 
700 1 |a Lee, Hyun Jae  |e verfasserin  |4 aut 
700 1 |a Lee, Jae Woo  |e verfasserin  |4 aut 
700 1 |a Bang, Seain  |e verfasserin  |4 aut 
700 1 |a Bae, Tae-Sung  |e verfasserin  |4 aut 
700 1 |a Park, Jong Bae  |e verfasserin  |4 aut 
700 1 |a Yu, Seung Min  |e verfasserin  |4 aut 
700 1 |a Kang, Yong-Cheol  |e verfasserin  |4 aut 
700 1 |a Park, Juyun  |e verfasserin  |4 aut 
700 1 |a Park, Myeongkee  |e verfasserin  |4 aut 
700 1 |a Jeong, Yeonsu  |e verfasserin  |4 aut 
700 1 |a Lee, Sang Geul  |e verfasserin  |4 aut 
700 1 |a Jin, Jong Sung  |e verfasserin  |4 aut 
700 1 |a Kim, Kyoung-Ho  |e verfasserin  |4 aut 
700 1 |a Sujak, Muhammad  |e verfasserin  |4 aut 
700 1 |a Moon, Surk-Suik  |e verfasserin  |4 aut 
700 1 |a Park, Sanghyuk  |e verfasserin  |4 aut 
700 1 |a Song, Myung Kwan  |e verfasserin  |4 aut 
700 1 |a Kim, Chang-Su  |e verfasserin  |4 aut 
700 1 |a Ryu, Seung Yoon  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Advanced materials (Deerfield Beach, Fla.)  |d 1998  |g 34(2022), 32 vom: 28. Aug., Seite e2202866  |w (DE-627)NLM098206397  |x 1521-4095  |7 nnns 
773 1 8 |g volume:34  |g year:2022  |g number:32  |g day:28  |g month:08  |g pages:e2202866 
856 4 0 |u http://dx.doi.org/10.1002/adma.202202866  |3 Volltext 
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