Figure 1 | Friction-induced photoluminescence changes of the MHP film. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Figure 1 | Friction-induced photoluminescence changes of the MHP film.

Caption

Figure 1 | Friction-induced photoluminescence changes of the MHP film. PL spectra of MAPbBr3 (a), MAPbI3 (b), FAPbBr3 (c), and CsPbBr3 (d) films scraped by Cu and Al. Microphotograph (e), fluorescence microphotograph (f), confocal PL mapping (1 μW laser) (g), TRPL mapping (h) images and fitting curves (i) of the Cu-scraped MAPbBr3 film; red and blue dash lines indicate areas with and without friction, respectively.

Credit

Xin Guo et al.

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