研究目的
Exploring the stability of perovskite films and solar cells under RGB light illumination in the medium vacuum environment that belongs to near space.
研究成果
The study demonstrates that CH3NH3PbI3 films and solar cells degrade differently under RGB light illumination in a medium vacuum, with blue light causing the most severe degradation. The efficiency loss in solar cells is attributed to both perovskite decomposition and photoexcited carriers accelerating ion migration. Encapsulation can mitigate the vacuum's accelerating effect on degradation.
研究不足
The study is limited to CH3NH3PbI3 perovskite films and solar cells under specific RGB light conditions in a medium vacuum, which may not fully represent all space environments.
1：Experimental Design and Method Selection:
The study involves exposing CH3NH3PbI3 perovskite films and solar cells to RGB light illumination in a medium vacuum environment to simulate near space conditions.
2：Sample Selection and Data Sources:
Perovskite films and solar cells were prepared using standard fabrication techniques.
3：List of Experimental Equipment and Materials:
SEM (Carl Zeiss, Merlin), XPS, XRD, FT-IR spectrometer (PerkinElmer), UV-vis absorption spectra (Perkin Elmer model lambda 750), PL spectra (PerkinElmer LS 55).
4：5). Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: Perovskite films were spin-coated on ITO substrates, annealed, and then exposed to RGB light in a vacuum chamber. Solar cells were fabricated with the architecture FTO/TiO2/CH3NH3PbI3/spiro-OMeTAD/MoO3/Ag.
5：Data Analysis Methods:
Morphological, chemical, and structural changes were analyzed using SEM, XPS, XRD, and optical properties were assessed through UV-vis and PL spectra.
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