کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1538239 | 996606 | 2010 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Moth-eye-structured light-emitting diodes Moth-eye-structured light-emitting diodes](/preview/png/1538239.png)
InGaAlP/GaAs red light-emitting diodes (LEDs) with a sub-wavelength moth-eye structure at the output surface were demonstrated. A high-resolution polydimethylsiloxane (h-PDMS) casting material was used for the fabrication of the moth-eye structure from polymer template which was fabricated by hot embossing. The h-PDMS mold was subsequently used to transfer the nanostructure on the output surface of the LED by soft embossing. We succeeded in forming a close packed hexagonal array of hemispheres with 300 nm pitch, and 128 nm depth. With 10 mA driving current, the corresponding efficiency (cd/A) of moth-eye-structured light-emitting diodes was enhanced by 36% compared with those of non-patterned LEDs. The experimental results are in agreement with the results of a theoretical analysis of the effect of the moth-eye structure.
Journal: Optics Communications - Volume 283, Issue 11, 1 June 2010, Pages 2446–2450