研究目的
Investigating the triplet-triplet annihilation effects in rubrene/C60 OLEDs with electroluminescence turn-on breaking the thermodynamic limit.
研究成果
The TTA mechanism enables the observation of EL below the theoretical Voc derived from the direct band-to-band recombination mechanism. It has been reported that TTA can take place in non-coherent sunlight level, and hence also works in the operating condition of practical OLEDs.
研究不足
The validity of the diode equation for organic heterojunction is debatable and needs more thorough consideration.
1：Experimental Design and Method Selection:
The study involves theoretical calculations and experimental evidence to examine the higher-order effects in rubrene/C60 OLEDs.
2：Sample Selection and Data Sources:
Rubrene/C60 OLEDs are used as samples.
3：List of Experimental Equipment and Materials:
Not explicitly mentioned.
4：Experimental Procedures and Operational Workflow:
The study calculates the photon current density and EL luminance as a function of voltage for various color OLEDs.
5：Data Analysis Methods:
The study uses the generalized Kirchhoff and Planck equation to calculate the emitted photon current density per wavelength and EL intensity.
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