Multi‐Functional Transparent Luminescent Configuration for Advanced Photovoltaics |
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| Authors: | Minwoo Nam Hyun‐Keun Kwon S Joon Kwon Soon‐Hong Kwon Minjeong Cha Sung‐Hwan Lee Sangpil Park Dawoon Jeong Kyu‐Tae Lee Hanju Rhee Young Rag Do Sangin Kim Kyoungsik Kim Richard H Friend Joon Soo Han Il Ki Han Doo‐Hyun Ko |
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| Institution: | 1. Korea Institute of Science and Technology, Seoul, Republic of Korea;2. Department of Physics, Chung‐Ang University, Seoul, Republic of Korea;3. Department of Applied Chemistry, Kyung Hee University, Yongin, Gyeonggi, Republic of Korea;4. Multidimensional Spectriscopy Laboratory, Korea Basic Science Institute, Seoul, Republic of Korea;5. Department of Chemistry, Kookmin University, Seoul, Republic of Korea;6. Department of Electrical and Computer Engineering, Ajou University, Suwon, Gyeonggi, Republic of Korea;7. School of Mechanical Engineering, Yonsei University, Seoul, Republic of Korea;8. Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge, UK |
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| Abstract: | The conversion and manipulation of light via luminescent down‐shifting (LDS) show promise in numerous applications. An elegant combination of lanthanide‐doped polymer‐derived ceramics incorporated with versatile nanopatterns is demonstrated using direct nanoimprint techniques. The prompt formation of nanoscale photonic structures enhances the fluorescence emission from the LDS while retaining the material's optical transparency. The functionality of this material is further expanded to accommodate surface energy modulation by nanopatterns. The practical applicability of this platform in photovoltaic devices is evaluated, showing distinctively enhanced efficiency and lifetime mainly attributed to the nanopattern assisted strong LDS property. Moreover, to efficiently combine two lanthanide emissions, so called a “double imprint” approach is devised by superpositioning two LDS nanopatterned arrays. Combined with the multi‐functionality such as prominent LDS characteristics, color tunability, and surface energy modulation, the developed LDS platform offers promise for esthetic building‐integrated photovoltaics. |
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| Keywords: | luminescent down‐shifting nanopatterns nanoimprint lithography organic photovoltaics spectrum conversion |
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