研究目的
Investigating the performance of panchromatic organic photodetectors using SubPc as a non-fullerene acceptor in combination with PbPc as the donor.
研究成果
The study demonstrates that SubPc can effectively serve as a non-fullerene acceptor in panchromatic OPDs, achieving a wide response from UV to NIR with a detectivity higher than 1010 Jones. This suggests SubPc's potential for high-performance OPDs, especially in applications requiring photostability.
研究不足
The study is limited by the photostability and efficiency of the SubPc acceptor compared to fullerene derivatives, and the optimization of device structure for higher performance.
1：Experimental Design and Method Selection:
The OPDs were designed with a structure of ITO/MoO3/CuI/PbPc/SubPc/Bphen/Al, where PbPc and SubPc served as the donor and non-fullerene acceptor, respectively. The thickness of SubPc varied from 50 to 80 nm to optimize device performance.
2：Sample Selection and Data Sources:
ITO substrates were used as the anode, with MoO3 and CuI as buffer and template layers, respectively. Absorption spectra and EQE measurements were conducted to evaluate device performance.
3：List of Experimental Equipment and Materials:
A Lambda 950 spectrophotometer for absorption spectra, a SR830 lock-in amplifier for EQE measurements, and a Keithley 2400 source meter for dark current measurements.
4：Experimental Procedures and Operational Workflow:
All layers were thermally evaporated under vacuum. Absorption and EQE spectra were measured under ambient conditions.
5：Data Analysis Methods:
EQE and detectivity were calculated from the measured spectra and dark current to assess device performance.
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