Figure 3 | Charge–carrier dynamics in the QDs. (IMAGE)

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

Figure 3 | Charge–carrier dynamics in the QDs.

Caption

Figure 3 | Charge–carrier dynamics in the QDs. a, Schematic illustration depicting exciton quenching of QDs by ZnO before and after recrystallization. b, PL decay curves measured for the QDs under different conditions: QDs on glass, denoted as glass; glass/QDs/ZnO, denoted as ZnO; glass/QDs/ ZnO/Al, denoted as ZnO/Al; glass/QDs/ZnO with acid treatment, denoted as ZnO (acid); glass/QDs/ZnO/Al with acid treatment, denoted as ZnO/Al (acid); and glass/QDs/ZnO/Al with acid treatment after 5 days of aging, denoted as ZnO/Al (acid-5 days). c, Schematic diagram of the setup for PL spectra testing at a voltage below the turn-on voltage for electroluminescence. d, PL intensity versus voltage curves of the device before and after aging. e, Capacitance‒voltage curves of the device during positive aging, and f, the derivative of capacitance (dC/dV) as a function of voltage (V) during positive aging.

Credit

Song Wang, Shihao Liu et al.

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