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Lead (II) perovskite (PV, e.g., CH3NH3PbI3–xClx) with 3 wt% polyvinylpyrrolidone (PVP) produces an ≈90 nm film containing a PVP–PV composite consisting of ≈15-nm-sized PV nanocrystals. Solar cells using 3 wt% PVP–PV have several advantages over a device using nondoped PV, which include an increase in transparency, stability of the film, efficiency, and reproducibility.
Guo et al. (Thu,) studied this question.
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