fig6

Figure 6. (A) Schematic of the enhanced organic red emission through energy transfer channels; (B) optical spectrum of the WLED. Insets are the photographs of red and yellow PNC-PMMA, and films cured in cuvettes; (C) modulation bandwidth of the system based on μLED and μLED with different PNC-PMMA films; (D) BER of μLED with and without PNC-PMMA films at different data rates. Reproduced with permission: (A)^[54], Copyright 2024, Wiley-VCH GmbH; (B-D)^[31], Copyright 2021, American Chemical Society. 4CzTPN-Ph: 2,3,5,6-tetrakis(3,6-diphenylcarbazol-9-yl)-1,4-dicyanobenzene; ET: energy transfer; CB: conduction band; VB: valence band; LUMO: lowest unoccupied molecular orbital; HOMO: highest occupied molecular orbital. PNC-PMMA: perovskite nanocrystal-polymethyl methacrylate; WLED: white light-emitting diode; μLED: micro light-emitting diode; BER: bit-error-rate.