IQE-200 Quantum Efficiency Measurement Systems0 pages

NE
W

IQE-200 Quantum Efficiency
Measurement Systems
Oriel Instrument’s IQE-200 Series Systems are turn-key quantum efficiency measurement
instruments used to measure the External Quantum Efficiency (EQE) and Internal Quantum
Efficiency (IQE) of solar cells, detectors, or other photon-current devices. These systems
meet the ASTM E1021-12 standard test method for spectral responsivity measurements of
photovoltaic devices.
Wavelength accuracy is an impressive 0.5 nm, repeatability is +/-0.2% from 400 – 1000 nm,
and spectral resolution is 10 nm (for systems with resolution down to 5 nm, please contact
an Oriel Sales Engineer). We offer systems to cover the spectral ranges of 300 – 1100 nm
and 300 – 1800 nm, for both AC-only and AC and DC operation. The all new IQE200
software commands the system’s components and acquires and displays both EQE and IQE
results. A unique feature of the IQE200 is the patent pending optical design which removes
the need to reposition the detector and sample, thereby eliminating positional errors. The
software is intuitive, fast and accurate, yet flexible enough to support all cell types and
measurement modes. The IQE200 is a true research instrument for solar cell analysis
–supporting the changing needs of Researchers.
• Fast, accurate and repeatable EQE and IQE measurements
• Patent pending optical design eliminates the need to
reposition detector and sample
• Spectral responsivity, diffuse reflectance and Jsc
measurements also supported
• AC and DC mode measurement systems cover all cell types
• Compliant to ASTM E1021-12 standard test method

WHAT ARE EQE AND IQE?
External Quantum Efficiency (EQE) is the ratio of the number of photons incident on a solar
cell to the number of generated charge carriers. Internal Quantum Efficiency (IQE) also
considers the internal efficiency - that is, the losses associated with the photons reflected
back from the surface of the cell. In an IQE measurement, these losses are measured in order
to calculate a net quantum efficiency – a much truer efficiency measurement. The patentpending Oriel IQE200 calculates both measurements simultaneously, ensuring the highest
measurement accuracy.

• All new software application acquires data from all
channels in a single pass
• Full complement of accessories include TE cooled vacuum
chucks, light bias tools and X-Y motion stages

100
90
80

• Custom system requirements supported
EQE %

70
60
50
40
30
20
10
0
0

200

400

600

Wavelength (nm)
Fig. 1 Silicon Cell.

800

1000

1200