Plasmonic enhancement in optoelectronics

Metal nanostructures in sub nanometer scale exhibited the plasmonic absorption behavior and is fruitful for opto-electronic applications. Significantly, noble metals demonstrate this absorption within the visible spectrum. Due to its higher momentum, coupling of plasmons with photons can yield enhancement in optoelectronic devices especially in OLEDs and organic solar cells. Thus, the higher momentum of plasmons reduces the exciton lifetime and thereby the exciton generation or the dissociation process reinforced in such systems. This process is termed as localized plasmonic coupling or enhancement. Meanwhile, the higher scattering cross section of noble metal nanoparticles are capable of generating far-field plasmonic enhancements. In this respect, we examine these mechanisms in optoelectronic devices towards enhancing the quantum efficiencies.

References: 

1)Sung Hyun Kim, Tae-Sung Bae, Wooseok Heo, Taiha Joo, Kyung-Deok Song, Hong-Gyu Park, and Seung Yoon Ryu, "Effects of Gold-Nanoparticle Surface and Vertical Coverage by Conducting Polymer between ITO and Hole Transport Layer on Organic Light-Emitting Diodes", ACS Applied Materials & Interfaces, 7 (2015) 15031–15041. 

2)Selvakumaran Nagamani, Gunasekar Kumarasamya, Myungkwan Song, Chang Su Kim, Dong-Ho Kim, Seung Yoon Ryu, Jae-Wook Kang, Sung-Ho Jin. "Optical absorption and electrical properties of enhanced efficiency in organic solar cells as interfacial layer with Au NPs", Synthetic Metals, 217 (2016) 117-122. 

Display Convergence, Division of Display and Semiconductor Physics, College of Science and Technology,  Korea University Sejong Campus

2511 Sejong-ro, Sejong City, 339-770, Republic of Korea