Exciplex‐Based Organic Light‐Emitting Diodes with Near‐Infrared Emission,Advanced Optical Materials

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Exciplex‐Based Organic Light‐Emitting Diodes with Near‐Infrared Emission
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2020-02-07 , DOI: 10.1002/adom.201901917
Yun Hu ₁ , You‐Jun Yu ₁ , Yi Yuan ₁ , Zuo‐Quan Jiang ₁ , Liang‐Sheng Liao _{1,

2}

Affiliation

Near‐infrared exciplex can weaken molecular design difficulties, and has the advantage of easy bathochromic‐shift spectra via selecting the suitable electron donors and acceptors. In this contribution, exciplex is applied to fabricate near‐infrared (NIR) organic light‐emitting diodes (OLEDs) incorporating a synthesized fluorescent material 3‐([1,1″:3′,1″‐terphenyl]‐5′‐yl)acenaphtho[1,2‐b]pyrazine‐8,9‐dicarbonitrile (APDC‐tPh) and a commercially available material 4,4′,4″‐tris(carbazol‐9‐yl)triphenylamine (TCTA). The device having a mixed TCTA:APDC‐tPh as an emitting layer shows a 730 nm NIR emission with a maximum external quantum efficiency (EQE) of about 0.1%, while the device having 2‐[4‐(diphenylamino)phenyl]‐10,10‐dioxide‐9H‐thioxanthen‐9‐one (TXO‐TPA):APDC‐tPh as the emitting layer exhibits an emission peak of 704 nm with a maximum EQE of 1.27%. These results prove the feasibility of fabricating the efficient exciplex‐based NIR OLEDs.

中文翻译：

具有基于近红外发射的基于激基的有机发光二极管

近红外激基复合物可以减轻分子设计的难度，并具有通过选择合适的电子供体和受体而易于进行红移谱的优势。在此贡献中，激基复合物被用于制造结合了合成荧光材料3-（[1,1''：3'，1''-三联苯] -5'-yl的近红外（NIR）有机发光二极管（OLED））ac [1,2-b]吡嗪-8,9-二腈（APDC-tPh）和市售材料4,4'，4''-三（咔唑-9-基）三苯胺（TCTA）。具有TCTA：APDC-tPh混合作为发射层的器件显示730 nm NIR发射，最大外部量子效率（EQE）约为0.1％，而具有2- [4-[（二苯基氨基）苯基] -10的器件，10-二氧化物-9 H噻吨酮-9一（TXO-TPA）：APDC-tPh作为发射层，显示出704 nm的发射峰，最大EQE为1.27％。这些结果证明了制造高效的基于激基复合物的NIR OLED的可行性。

更新日期：2020-04-06

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