Chang Ge, Jing Li, Guohong Wang, Kang Su, Xingdong Lu. Size effect on optical performance of blue light-emitting diodes[J]. Journal of Semiconductors, 2019, 40(10): 102301
- Journal of Semiconductors
- Vol. 40, Issue 10, 102301 (2019)
Fig. 1. (Color online) Optical micrograph of LEDs. The sizes of active area range from 20 to 120 μ m.
Fig. 2. (Color online) J –V characteristics of micro-LEDs with different sizes.
Fig. 3. (Color online) Normalized EQE vary with forward current density of micro-LEDs with different sizes.
Fig. 4. (Color online) Normalized EQE vary with chip size at 100, 300, and 500A/cm2.
Fig. 5. (Color online) (a) Peak wavelength and (b) change of peak wavelength vary with forward current density of micro-LEDs with different sizes.
Fig. 6. (Color online) Full width at half maximum (FWHM) varying with forward current of micro-LEDs with different sizes.
Fig. 7. (Color online) Current density dependence of Δλ d driven by PWM at (a) 500 and (b) 100 A/cm2 of micro LEDs with different sizes.
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Table 1. The geometric parameters of LEDs.
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