Publications by authors named "Sung-yoon Joe"

Article Synopsis
  • Positive aging significantly improves the electroluminescence characteristics of quantum-dot light-emitting diodes (QLEDs) by enhancing electron transport and reducing exciton quenching at the interfaces.
  • The use of ultraviolet-curable resin in encapsulation helps delay harmful reactions at the aluminum and zinc magnesium oxide interface, leading to better device performance over time.
  • The study revealed that after 120 hours, the external quantum efficiency of indium phosphide (InP) QLEDs increased from 3.16% to 12.04%, showcasing the positive aging effect and providing insights into the operating mechanisms of aging agents in QLEDs.
View Article and Find Full Text PDF

With poly(3-hexylthiophene) (P3HT) nanowire (NW) inclusion in active layers (ALs), organic solar cells (OSCs) based on P3HT donor and indene-C60 bisadduct (ICBA) acceptor showed power conversion efficiency (PCE) improvements for both bulk heterojunction (BHJ)- and bilayer (BL)-structure AL devices. The PCE increase was approximately 14 % for both types of P3HT:ICBA OSCs. However, improvements in short-circuit current density (Jsc ) were about 4.

View Article and Find Full Text PDF

We report the fabrication of efficient indium-tin-oxide-free organic solar cells based on poly(3-hexylthiophene-2,5-diyl):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM). All layers of the devices from the lowermost silver nanowire cathode to the uppermost conducting polymer anode are deposited from solution and processed at plastic-compatible temperatures<200 °C. Owing to the absence of an opaque metal electrode, the devices are semitransparent with potential applications in power-generating windows and tandem-cells.

View Article and Find Full Text PDF