Figure 4: Electroluminescent properties of green-emitting InGaN/GaN nanorod LEDs aligned between the metal electrodes. | Scientific Reports

Figure 4: Electroluminescent properties of green-emitting InGaN/GaN nanorod LEDs aligned between the metal electrodes.

From: Horizontally assembled green InGaN nanorod LEDs: scalable polarized surface emitting LEDs using electric-field assisted assembly

Figure 4

Photographs of EL devices with aligned nanorod LEDs at voltages of 21.0 Vrms in the presence of background light (a) as-assembled with 0.7 cm × 0.6 cm area, (b) post-treated with 0.7 cm × 0.6 cm area, (c) post-treated with 0.3 cm × 0.3 cm area, and (d) post-treated with 100 μm × 100 μm area, and without background light (e) as-assembled with 0.7 cm × 0.6 cm area, (f) post-treated with 0.7 cm × 0.6 cm area, (g) post-treated with 0.3 cm × 0.3 cm area, and (h) post-treated with 100 μm × 100 μm area. EL spectra of (i) as-assembled EL devices under applied voltages ranging from 4.0 to 21.0 Vrms and (j) post-treated EL devices under applied voltages ranging from 2.8 to 21.0 Vrms (The insets in show the EL emission peak wavelength of as-assembled and post-treated EL devices as a function of injection voltage).

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