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32. Yoon SJ, Guo Z, dos Santos Claro PC, Shevchenko EV, Huang L (2016) Direct imaging of
long-range exciton transport in quantum dot superlattices by ultrafast microscopy. ACS Nano
10:7208–7215
33. Wu Y, Li S, Gogotsi N, Zhao T, Fleury B, Kagan CR, Murray CB, Baxter JB (2017) Directional
carrier transfer in strongly coupled binary nanocrystal superlattice films formed by assembly
and in situ ligand exchange at a liquid-air interface. J Phys Chem C 121:4146–4157
34. Ghimire S, Chouhan L, Takano Y, Takahashi K, Nakamura T, Yuyama K, Biju V (2019)
Amplified and multicolor emission from films and interfacial layers of lead halide perovskite
nanocrystals. ACS Energy Lett. 4:133–141
35. Ghimire S, Nair VC, Muthu C, Yuyama K, Vacha M, Biju V (2019) Photoinduced photoluminescence enhancement in self-assembled clusters of formamidinium lead bromide perovskite
nanocrystals. Nanoscale 11:9335–9340