Spectroscopy

Integration Sphere - K SPHERE-Petite

General information

Investigation area

Spectroscopy
Techniques

Photoluminescence Quantum Yield
Manufacturer

Horiba
Fabrication year

2025
Measured quantity

Absolute Luminescence Efficiency paths the way in understanding the efficeny of a sample and the influence of defects. The Calorimetric Absorption Spectroscopy measures a wavelength-dependent sample heating and the PL and/or transmission.
Main application

Measuring Photoluminescence Quantum Yield in a wavelength range of 320 - 950 nm at room temperature. Can also perform calorimetric absorption spectroscopy.
In-situ, real-time compatible

Yes
High-throughtput analysis

Yes
Correlated workflow available

Yes
Facility

Access to this instrument is possible via the MAPEX Core Facility for Materials Analytics

Technical aspects

Integration Sphere system 'K SPHERE-Petite' from Horiba which has a diameter of 81 mm that fallicate the automatic measurment of the Photoluminescence Quantum Yield in dependence of the wavelength (within the wavelength range of 320 – 950 nm). This is important for samples with different radiation characteristic at room temperature (295 K). The Fluorolog system the Integration Sphere is integrated to includes two double monochomators and a tunable excitation source. This creates the opportunity to analyse the various types of defects of the samples and derivates the specific impact of a defect on the desired functionality (optical output, current switching, etc.). Through the tunable excitation source, the internal quantum efficiency related to possible quantum well emmisions as well as the external quantum efficiency an be measured.
In-situ capabilities

Sample Stages, Exitation Wavelength Dependencies, room temperature and higher temperatures.
Correlated workflow

Photoluminessence and Photoluminessence Exitation measurements (Fluorolog), Ellipsometry, Electron microscopy, X-Ray Defraction, various surface analysis methods, etc.
Additional measurement possibilities

Depending on the outcome of the measurements with the Fluorolog and Integration Sphere, there is always the possibility to transition towards other spectroscopic equipment of the RG Callsen based on a collaboration.

Updated by: MAPEX