Multi-Functional Transparent Luminescent Configuration for Advanced Photovoltaics

作者：Nam Minwoo; Kwon Hyun Keun; Kwon S Joon; Kwon Soon Hong; Cha Minjeong; Lee Sung Hwan; Park Sangpil; Jeong Dawoon; Lee Kyu Tae; Rhee Hanju; Do Young Rag; Kim Sangin; Kim Kyoungsik; Friend Richard H; Han Joon Soo; Han Il Ki; Ko Doo Hyun

来源：Advanced Energy Materials, 2016, 6(10): 1502404.

DOI：10.1002/aenm.201502404

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.

• 出版日期2016-5-25