Figure 2 | Device performance of MPII-treated PQD-based NIR LEDs. (IMAGE)

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

Figure 2 | Device performance of MPII-treated PQD-based NIR LEDs.

Caption

Figure 2 | Device performance of MPII-treated PQD-based NIR LEDs. a, b Device structure and cross-sectional scanning electron microscopy (SEM) image of the fabricated PQD-based NIR-LEDs. c, Electroluminescent (EL) spectra of MPII-treated PQD-based NIR-LEDs, the inset shows a picture of lighted NIR-LEDs with active area of 900 mm2. d, Current density-voltage curves, e, radiance-voltage curves, and f, EQE-radiance curves of the control and MPII-treated PQD-based NIR-LEDs. g, Schematic diagram of palm veins imaging with MPII-treated PQD-based LEDs as NIR light source. h, i Photographs of the palm taken under the irradiation of MPII-treated PQD-based NIR-LEDs with different driving voltages.

Credit

Liang-Sheng Liao et al.

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