NIR Light Conversion Layers for LED-chip

Forschungsthema/Bereich

Material Science / LED

Typ der Abschlussarbeit

Master

Startzeitpunkt

01.04.2026

Bewerbungsschluss

27.03.2026

Dauer der Arbeit

6 Months

Beschreibung

Near-infrared (NIR) light in the wavelength range 800–2500 nm offers unique opportunities for modern sensing technologies. It is widely used in temperature sensing, chemical and humidity sensing, machine vision, biomedical diagnostics, and security applications. Compared to visible light, NIR radiation can penetrate deeper into materials and is less sensitive to ambient light, making it highly attractive for robust, real-world sensors.
In our research group, we have developed novel luminescent materials that can be efficiently excited by a standard 940 nm LED chip and emit strongly in the 1200–1700 nm wavelength range. This spectral range is particularly important for optical sensing because it overlaps with characteristic absorption features of water and many other molecules.
The goal of this Master’s project is to integrate these luminescent materials as a light conversion layer directly on top of an LED chip, creating a compact NIR light source for sensing applications. Instead of using expensive lasers or broadband light sources, the project focuses on low-cost, energy-efficient LED-based solutions.
A major part of the work will involve optimizing the light conversion layer, including:
• Selection of suitable phosphor
• Optimization of phosphor concentration
• Control of the thickness of the light conversion layer
As these parameters strongly influence light intensity, spectral shape, efficiency, and stability of LED, the student will experimentally study how these factors affect device performance and identify optimal design rules.
This Master’s project is ideal for students who are interested in sensors, photonics, and applied engineering solutions, and who want to work on a topic with clear practical relevance. The project combines material functionality with device-level thinking and offers a well-defined path from concept to working prototype.

Voraussetzung

Voraussetzungen an Studierende

• The student should have a strong interest in measurement systems, signal interpretation, and modeling.
• Hands-on work with LEDs, optics, and sensors would be helpful but not required.
• To complete the ambitious project within the limited time requires hard work, self-motivation, and cooperation with other colleagues in a multidisciplinary and international research group (N4E).

Studiengangsbereiche

• Ingenieurwissenschaften
  Chemieingenieurwesen & Verfahrenstechnik
  Elektrotechnik & Informationstechnik
  Maschinenbau
  Materialwissenschaft & Werkstofftechnik
  Optics & Photonics

Betreuung

Titel, Vorname, Name

Dr. Andrey Turshatov

Organisationseinheit

Institute of Microstructure Technology (IMT)

E-Mail Adresse

andrey.turshatov@kit.edu

Link zur eigenen Homepage/Personenseite

Website

Bewerbung per E-Mail

Bewerbungsunterlagen

• Anschreiben
• Lebenslauf
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E-Mail Adresse für die Bewerbung
Senden Sie die oben genannten Bewerbungsunterlagen bitte per Mail an andrey.turshatov@kit.edu


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