Characteristic improvements of thin film AlGaInP red light emitting diodes on a metallic substrate

Zhao Bin^{1, 2}, Hu Wei^{1, 2}, Tang Xian-Sheng^{1, 2}, Huo Wen-Xue^{1, 2}, Han Li-Li^{1, 2}, Zhao Ming-Long^{1, 2}, Ma Zi-Guang¹, Wang Wen-Xin¹, Jia Hai-Qiang¹, Chen Hong^{1, †}

(color online) (a) EL spectra of thin film (TF) RLED and reference (Ref) RLED at 2 A/cm². (b) Forward current–voltage (I–V) curves of thin film (TF) RLED and reference (Ref) RLED. (c) FWHM and λ_p curves of thin film (TF) RLED and reference (Ref) RLED depending on injected currents. (d) LOP and efficiency curves of thin film (TF) RLED and reference (Ref) RLED depending on injected currents.