Figure 5 | Scientific Reports

Figure 5

From: Determination of the electron-capture coefficients and the concentration of free electrons in GaN from time-resolved photoluminescence

Figure 5

Temperature dependence of PL lifetime for the main PL bands in GaN.

(a) sample 1007, (b) sample 201, (c) sample 1007, (d) sample RS280. The solid lines are calculated using Eqs (1) and (5) with the following parameters: ED = 14 meV for samples 1007, 2057, and 201, and ED = 20 meV for sample RS280; EA = 186 meV for the UVL band and EA = 350 meV for the BL1 band (all samples); CpA = 10−6 cm3/s for the UVL band and CpA = 7 × 10−7 cm3/s for the BL1 band (all samples); ND = 1.1 × 1017 cm−3 (sample 1007), 1 × 1017 cm−3 (sample 2057), 3 × 1017 cm−3 (201), and 1.6 × 1016 cm−3 (RS280); NA = 5 × 1016 cm−3 (samples 1007, 2057, and 201) and 1.0 × 1016 cm−3 (RS280); CnA = 2.6 × 10−12, 5.6 × 10−12, 2 × 10−12, and 2 × 10−12 cm3/s for the UVL band in samples 1007, 2057, H201, and RS280, respectively; CnA = 4.2 × 10−13, 3.2 × 10−13, and 3.7 × 10−13 cm3/s for the BL1 band in samples 1007, 201, and RS280, respectively; CnA = 8 × 10−14, 1.7 × 10−13, 6.8 × 10−14 cm3/s for the YL1 band in samples 1007, 2057, and 201, respectively; and CnA = 7.4 × 10−14 and 2.4 × 10−14 cm3/s for the RL1 band in samples 2057 and 201, respectively.

Back to article page