研究目的
Investigating the mid-wavelength infrared responsivity of colloidal quantum dot/organic hybrid photodetectors.
研究成果
The study demonstrated the feasibility of MWIR detection using PCBM/Ag2Se CQD hybrid films, with a responsivity of 0.2 mA/W. The hybrid approach offers cost-effectiveness and fabrication versatility for infrared technologies.
研究不足
The study focuses on room temperature measurements and the responsivity is relatively low. Further optimization of Ag2Se CQD concentration and film thickness could lead to higher values.
1：Experimental Design and Method Selection:
The study utilized a solution blend of Ag2Se colloidal quantum dots and PCBM to fabricate photodetectors.
2：Sample Selection and Data Sources:
Ag2Se CQDs were synthesized and blended with PCBM in varying weight ratios.
3：List of Experimental Equipment and Materials:
Thermo Nicolet Avatar 370 FTIR spectrometer, Agilent 4155A semiconductor parameter analyzer, Newport 67030 blackbody.
4：Experimental Procedures and Operational Workflow:
Films were deposited using spin-casting, followed by annealing. Optical absorbance was characterized using FTIR. Photoconductive devices were fabricated and measured under 5 μm irradiation.
5：Data Analysis Methods:
The responsivity was calculated from the photocurrent arising from optoelectronic effect.
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