High-Stability, High-Efficiency Organic Monoliths Made of Oligomer Nanoparticles Wrapped in Organic Matrix

Creative Commons License

Soran-Erdem Z., ERDEM T., Gungor K., Pennakalathil J., Tuncel D., Demir H. V.

ACS NANO, cilt.10, sa.5, ss.5333-5339, 2016 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 10 Sayı: 5
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1021/acsnano.6b01473
  • Dergi Adı: ACS NANO
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.5333-5339
  • Anahtar Kelimeler: oligomer nanoparticles, fluorescent monoliths, organic crystalline host, light-emitting diodes, solid-state lighting, CONJUGATED POLYMER NANOPARTICLES, LIGHT-EMITTING-DIODES, SOLAR-CELLS, SEMICONDUCTOR NANOPARTICLES, QUANTUM EFFICIENCY, DOTS, RED, NANOCRYSTALS, FLUORESCENCE, ENHANCEMENT
  • Abdullah Gül Üniversitesi Adresli: Evet

Özet

Oligomer nanoparticles (OL NPs) have been considered unsuitable for solid-state lighting due to their low quantum yields and low temperature stability of their emission. Here, we address these problems by forming highly emissive and stable OL NPs solids to make them applicable in lighting. For this purpose, we incorporated OL NPs into sucrose matrix and then prepared their all-organic monoliths. We show that wrapping the OL NPs in sucrose significantly increases their quantum yield up to 44%, while the efficiency of their dispersion and direct solid-film remain only at similar to 6%. further showed similar to-fold improved temperature stability of OL NP emission within these monoliths. Our experiments revealed that a physical passivation mechanism is responsible from these improvements. As a proof-concept demonstration, we successfully employed these high-stability, high-efficiency monoliths as color converters on a blue LED chip. Considering the improved optical features, low cost, and simplicity of the presented methodology, we believe that this study holds great promise for a ubiquitous use of organic OL NPs in lighting and possibly in other photonic applications.