---
title: Download application note on CL for bulk and nanostructured Gallium Nitride-based LED materials
description: Cathodoluminescence imaging and spectroscopy is used extensively to study GaN materials and devices. To learn more, read this application note.
---

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# What you learn

- how CL is used to image local defects such as dislocations
- how light emission characteristics on small length scales can be probed
- how angular profile of emission can be established

![Thumbnail SPARC Application note CL for bulk and nanostructured](https://request.delmic.com/hs-fs/hubfs/Website/Landing%20and%20Thank%20you%20Pages%20Thumbnails/Thumbnail%20SPARC%20Application%20note%20CL%20for%20bulk%20and%20nanostructured.png?width=177&name=Thumbnail%20SPARC%20Application%20note%20CL%20for%20bulk%20and%20nanostructured.png)

 

## Cathodoluminescence for Bulk and Nanostructured Gallium Nitride-based LED Materials

Read this application note to learn how cathodoluminescence imaging and spectroscopy is used extensively to study GaN materials and devices or check out the preview [here](https://request.delmic.com/hubfs/Previews_landing%20page/Preview%20-%20Application%20Note%20SPARC%20Cathodoluminescence%20for%20Bulk.pdf). 

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