研究目的
Investigating the use of a benzodiimidazole-based system (TPA-BDI) as a down-converting layer in hybrid organic–inorganic LED devices to produce green light, eliminating the need for non-sustainable rare-earth elements.
研究成果
The research demonstrated the potential of using TPA-BDI as an organic down-converter in hybrid LEDs for green light emission, with a maximum luminous efficacy of 87 lm W?1 at a 1.0 mg ml?1 concentration. The study highlighted the importance of controlling the concentration of the organic material to minimize aggregation-induced quenching and the benefits of pulsed operation to enhance emission intensity. The reproducibility of device performance across multiple LEDs was also confirmed.
研究不足
The study notes aggregation-induced quenching at higher concentrations of TPA-BDI, leading to reduced emission intensity and changes in spectral shape. The degradation of the organic material under continuous operation was observed, indicating a need for further studies on photodegradation processes.
