研究目的
Investigating the development of an all-organic NIR-to-visible upconversion display with a photon-to-photon upconversion efficiency higher than 100%.
研究成果
An all-organic NIR-to-visible upconversion display with a photon-to-photon upconversion efficiency higher than 100% was successfully developed by integrating a photomultiplying organic NIR photodetector with a high-efficiency TADF-OLED. This high performance upconversion display has great potential for low-cost, high conversion efficiency, and high-resolution NIR imaging.
研究不足
The response wavelengths of the state-of-the-art organic NIR-upconverters are located mostly shorter than 800 nm, limiting their practical applications. High performance organic NIR-photodetectors are still rare due to the lack of high quality NIR absorption materials.
1：Experimental Design and Method Selection:
The study integrates a photomultiplying organic NIR photodetector with a high-efficiency thermally activated delayed fluorescent organic light-emitting-diode (TADF-OLED).
2：Sample Selection and Data Sources:
The photodetector is based on a lead phthalocyanine (PbPc)/C60 planar heterojunction, and the TADF-OLED uses 2PXZ-OXD as the emission material.
3：List of Experimental Equipment and Materials:
Includes ITO substrates, organic materials (PbPc, C60, NPB, 2PXZ-OXD, Bphen), and aluminum for electrodes.
4：Experimental Procedures and Operational Workflow:
Devices were fabricated in a high vacuum deposition chamber, with organic thin films deposited at specific rates.
5：Data Analysis Methods:
Luminance-voltage-current characteristics were measured with a source meter and a luminance meter; PL and EL spectra were measured with spectrophotometers.
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