The effect of introducing antibiotics into organic light-emitting diodes

Hassan Hafeez, P. Justin Jesuraj, Dong Hyun Kim, Jong Chan Lee, Jun Young Shin, Sang Ho Rhee, Won Ho Lee, Dae Keun Choi, Jun Hwan Cha, Chang Min Lee, Chul Hoon Kim, Janardan Lamichhane, Anaya Pokhrel, Tae Su Kim, Jae Kyung Sohng, Hyung Joong Yun, Jong Bae Park, Hee Suk Chung, Tae Sung Bae, Sang Geul LeeHyun Woo Park, Kwun Bum Chung, Aeran Song, Jang Hyuk Kwon, Hyeong Woo Bae, Yong Cheol Kang, Juyun Park, Myungkwan Song, Chang Su Kim, Seung Yoon Ryu

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The quest to improve the performance of organic light-emitting diodes (OLEDs) has led to the exploration of new materials with properties like interfacial dipole, excitons generation, and bandgap alignment. Here, we exploit these strategies by investigating the interaction of the antibiotic ampicillin with a widely used optoelectronic material, to fabricate state-of-the-art OLEDs. The charge distribution on the ampicillin molecule facilitates the generation of an interfacial dipole with a large magnitude. The optimum fusion of the two materials provides an enhanced bandgap alignment, charge balance and J/H-aggregated excitons. Values of current efficiency (120 cdA−1), external quantum efficiency (~35%) and power efficiency (70 lmW−1) are demonstrated. The cross-evaluation of performance with penicillin devices indicates the significance of ampicillin’s specific molecular structure in improving performance. The detailed investigations demonstrate that ampicillin has superior optoelectronic properties with high potential to contribute extensively in OLEDs and photovoltaics.

Original languageEnglish
Article number130
JournalCommunications Physics
Volume2
Issue number1
DOIs
StatePublished - 1 Dec 2019

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