A luminescence mapping technique for rapid evaluation of visible-light-emitting materials used in semiconductor light-emitting diodes

Autor: D.V. Morgan, H. Thomas, Y.H. Aliyu
Rok vydání: 1997
Předmět:
Zdroj: Measurement Science and Technology. 8:437-440
ISSN: 1361-6501
0957-0233
DOI: 10.1088/0957-0233/8/4/011
Popis: A technique for the rapid evaluation of the optical performance of wafers grown for fabricating visible-light-emitting diodes (LEDs) is presented. The technique is simple, non-destructive and can be used to qualify wafers prior to the relatively expensive device-processing stage. The technique resolves the problem resulting from the lack of correlation between photoluminescence measurements on as-grown materials and electroluminescence on the final structures. The lack of such correlation has been a pertinent problem for the material growth industry. The materials used for this investigation are those grown specifically for the fabrication of high-performance LEDs.
Databáze: OpenAIRE