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. 2018 May 9;30(11):3836–3846. doi: 10.1021/acs.chemmater.8b01143

Figure 5.

Figure 5

HR-TEM images of (A) template Cu2–xSe nanoplatelets. (B) Product CdSe nanoplatelets obtained by Cu+ for Cd2+ cation exchange using the NCs shown in (A) as templates. (C) Product CuInSe2 nanoplatelets obtained by partial Cu+ for In3+ cation exchange using the NCs shown in (A) as templates. All scale bars correspond to 10 nm. In the images of the CdSe and CuInSe2 nanoplatelets, the hexagonal lattice can be recognized. The insets show the FFT of the images that were used to determine the lattice spacings. Azimuthally integrated ED ring patterns of all three morphologies of (D). Template Cu2–xSe NCs. (E) Product CdSe NCs. (F) Product CuInSe2 NCs. Bulk XRD reference patterns for umangite (D, JPCDS PFD card 00-047-1745), wurtzite (E, JPCDS PFD card 04-011-9600), and hexagonal CuInSe2 (F, JPCDS PFD card 01-078-5190) are also shown. The ED ring patterns are shown in Figures S13–S15.