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NanoteQ
RT Williams Optics Lab

Optics

The RT Williams Optics Lab has several important functions at NanoteQ. The lab acts as a support facility for internal research groups, but does allow approved access to standardized device testing tools. Access to time domain spectroscopy or nanopositioning is done through collaboration with NanoteQ members only. 

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  1. Standardized testing for photovoltaics using NIST and NREL standards. 

  2. Standardized testing of lighting sources, CIE color scaling, power efficiency and quantum efficiency. lifetime, etc.

  3. Time resolved spectroscopy and optically stimulated TOF

  4. Nanopositioning with in situ spectroscopic fingerprinting.

 

Lab Manager: Dr. D.L. Carroll

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Electro-Optic Device Testing

Lighting and Display

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An important part of NanoteQ's optical metrology capabilities is the characterization of emitting devices.  The Lab maintains calibrated and certified capabilities in:

 

color scaling (CIE, CRI - temperature), 

power and internal conversion efficiencies, 

spectral analysis and contrast for display characteristics, 

lifetime testing, 

illumination patterns for general illumination sources.

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Solar Testing

 

Laterally mounted AM1.5g standard testing setup allows the researcher to test angular response of a solar collection device from +90 to -90 degrees. Air Mass is adjusted through filters to match changes in spectral content.

 

AM1.5g Class A standard simulator. This “top down” mounted simulator provides he most exact measurement of cell performance conforming to the ASTM E927-05 standard.  The Class A has a Spectral Match (each interval) 0.75 - 1.25, Irradiance Spatial Non-Uniformity 2% and Irradiance Temporal Instability 2%. Temperature control is available with this instrument. Certification / calibration certificates are available. 

 

QE/IPCE Measurement Kit

Used for solar cell QE/IPCE measurements.  Simple, yet flexible software that measures QE with a simple configuration setup. 300 W Xe light sources.  All components from Newport which makes support easy Digital lock-in measurements with a NIST calibrated detectors over the 350 – 1100 nm range. Multiple Solar cell fixtures are available.

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Time Domain Spectroscopy

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  • Transient absorption

  • Pump-probe

  • 4pi confocal with spectroscopic capabilities

  • Floquet system analysis

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Nano-positioning

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The lab supports a Sutter MP-285 Motorized Micromanipulator System mounted onto an Olympus BM60 microscope with digital, spectroscopic imaging and a motorized xy stage.

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© 2025 by NanoteQ @ Wake.

 

Wake Forest University is a small, selective, research university located in Winston-Salem NC. It has  a long tradition of innovation in the biomedical and physical sciences.  NanoteQ is a unit of WFU serving as a university-wide  central facility for specialized equipment and capabilities. Images and data content of this website are the property of WFU and its affiliate colleges. NanoteQ @ Wake reserves editorial right of access to commentary on these pages. Opinions expressed are not those of the University and the site does not represent binding policy by the University.

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