研究目的
Investigating the performance of a double-layered photodiode (DPD) for real-time signal evaluation in spectral-optical sensors, specifically for surface temperature measurements using the phosphor NaYF4:Yb3+,Er3+.
研究成果
The DPD-based signal evaluation method meets industrial requirements such as cost efficiency, miniaturization, high spectral resolution, robustness, and ease of handling. It enables the development of integrated or intelligent spectral-optical sensor modules using microsystems technology.
研究不足
The photocurrent evaluation limits insight into the actual signal form of the spectral-optical sensor, requiring precise knowledge of the individual sensor behavior.
1：Experimental Design and Method Selection:
The study employs a double-layered photodiode (DPD) for real-time evaluation of spectral information by measuring the ratio of two wavelength-dependent photocurrents.
2：Sample Selection and Data Sources:
Surface temperature measurements are conducted using the phosphor NaYF4:Yb3+,Er3+.
3：3+. List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Includes a double-layered photodiode (DPD WS
4：56), integrator-based readout electronics (DDC112), a 980 nm laser, optical fibers, and a spectrometer (iHR 550, Horiba). Experimental Procedures and Operational Workflow:
The phosphor is excited with a 980 nm laser, and the emitted light is collected and analyzed using the DPD and a spectrometer.
5：Data Analysis Methods:
The centroid of the spectral distribution is evaluated based on the photocurrent ratio, with statistical analysis of the measurement deviation.
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