Large- and Small-Area Sunlight — Delivered Indoors
Proven, Scalable Solar Simulation
Angstrom Designs’ products and services are trusted by
![NASA](/img/logos/nasa-logo.png)
![Jet Propulsion Laboratory](/img/logos/jet-propulsion-laboratory-logo.png)
![Northrop Grumman](/img/logos/northrop-grumman-logo.png)
![Aerospace](/img/logos/aerospace-logo.png)
![Air Force Research Laboratory](/img/logos/air-force-research-laboratory-logo.png)
![Space Force](/img/logos/space-force-logo.png)
![Air Force](/img/logos/air-force-logo.png)
![University of California](/img/logos/university-of-california-logo.png)
Proven LED Solar Simulation For All Applications
pLEDss, the programmable LED solar simulator, is a flexible, powerful, and efficient test system for illuminating current and future space-grade solar cells, coupons and panels. pLEDss has enough power to test AM0 space cells and is capable on cell technologies up to 6 junctions. With proven results from single cells up to panels larger than a few square meters, and with best in class performance, pLEDss can handle any space or terrestrial solar simulation need.
![Angstrom Designs](/img/30x10.jpg)
Large Panel Capable
Proven capability, scaling to areas over several square meters. Click here to learn more.
- Large area testing of circuits up to multiple square meters, not just large format solar cells
- Standard support frames from small areas to any size, and custom sizing too
- Better than Class AAA for every junction, even for very large areas
- Excellent spatial non-uniformity at any area, including > 1 sq. meter
- Trusted to build huge systems, like NASAs 3.1 sq. meter Artemis PPE simulator
- Small Frames are available too, standard and custom
- Use the same spectrum for large and small area testing
- Fully automated systems can be controlled by a manufacturing computer
![Angstrom Designs](/img/30x10.jpg)
![Angstrom Designs](/img/3x4_purple.jpg)
![Angstrom Designs](/img/3x4_purple.jpg)
Multi-Junction Capable
- Designed for multi-junction solar cells
- Measure and pass industry standard specifications for every junction
- Calibration of any cell location to isoypes
- Optional Fully automated calibration verification
- Patented, Junction Current Match (JCM) calibration further improves performance
![Angstrom Designs](/img/benchtop-single_whiteWithIsotype2.jpg)
Spectral and Spatial Control
- Fully programmable spectrum and irradiance with Angstrom Designs software
- Broad Irradiance control
- Change irradiance intensity with software - No attenuators
- Full control of spectrum
- Change spectrum with software - No filters
- Control of spatial illumination
- Low maintenance - No replacing lamps or filters
- Enable individual biasing of each junction of each cell in an assembled circuit
![Angstrom Designs](/img/benchtop-single_whiteWithIsotype2.jpg)
![Angstrom Designs](/img/PPE.png)
![Angstrom Designs](/img/PPE.png)
Application Flexibility
- All Sized Cells and Panels:
- From Cost Effective Small-Area, Single LED Head Systems for Single Cell Illumination
- To Efficient Medium-Area Testers for Coupons and Small Panels that have dozens of LED Heads
- To Large-Area Systems with hundreds of LED Heads for Arbitrarily Huge Panels
- Cells of All Technology Types:
- III-V Multi-junction Cells from 1 to 6 Junctions
- Silicon Cells
- Thin Film Cells, including Perovskite, CIGS, and CdTe
- Tandem and Triple Junction Cells from Silicon and Perovskite
Solar Simulation Verified by NASA
We meet NASAs most demanding needs for large panel test. Let's talk about your requirements.
![Angstrom Designs](/img/nasa-logo.png)
![Angstrom Designs](/img/pledss-testing.jpg)
![Angstrom Designs](/img/pledss-testing.jpg)
Highly Configurable
- Pulsed Illumination
- Pulses from 250ms to greater than 60sec
- Spectral and Irradiance Stability over each pulse and between all pulses
- Continuous Illumination
- Low-cost air-cooled heads for <3 suns AM0
- Water-cooled heads for >3 suns AM0
- Horizontal or Vertical Beam Orientation
- Scale to any size, from small cells to large panels by adding more LED heads
- Standard Illumination from 2.0 Suns down to 0.05 Suns (specifications slightly reduced above 1.0 Suns)
- Full Illumination Control: Irradiance, Spectrum, and Spatial Uniformity
- Best in Class performance for all junctions, even in large area systems
![Angstrom Designs](/img/3x20.png)
Reduce Manufacturing Costs
Reduce Your Solar Cell Manufacturing Costs Through Better Testing Capabilities
- Small-Area, Cost Effective Solar Simulation
- Large-Area Testing to Any Size, No Matter How Large
- Fully Automated Systems controlled by your Manufacturing Control System for High-Volume Production
- Proven, Automated 24/7 Test Capability
- Low Maintenance cost through long-life, >10,000 hour light sources
- Full solar cell and panel electrical characterization—including IV curves, Isc, Voc, Imp, Vmp, FF
- Superior stability and repeatability for all junctions
- Custom LED Drive Technology enabled continuous current control of LEDs, <0.1% light stability at low cost
![Angstrom Designs](/img/3x20.png)
![Angstrom Designs](/img/4x6.png)
![Angstrom Designs](/img/4x6.png)
Proven PV Space Heritage
Hundreds of pLEDss Heads have tested Thousands of Solar Cells and Panels
- AM0 Space Solar Simulation Is Much Harder Than AM1.5 Terrestrial:
- Space requires greater a greater spectral range
- AM0 requires almost double the irradiance of AM1.5
- Space requires much higher current matching than Class A Spectral Match provides
- Simulators adapted from terrestrial use are not sufficient for space
- Many adapted terrestrial simulators have:
- Low power, even when claiming "AM0 Boosted Power"
- Low Ultraviolet, even when claiming "AM0 Boosted UV"
- Low Infrared, even when claiming "AM0 Boosted IR"
- No ability to calibrate to isotype current matching
- Lower accuracy than needed or advertised
- Angstrom Designs has proven space heritage, with hundreds of pLEDss heads in use
- We co-invented LED solar simulation for Space with NASA
- We have tested thousands of space cells and panels
- We understand the unique challenges of space cells: Ge substrates, IMM, multi-junction, and more
- Terrestrial cell suppliers can benefit from the added capability of pLEDss technology
Space Simulator Comparison
pLEDss - LED | Modified Terrestrial LED | Pulsed Xenon | Continuous Lamp | |
---|---|---|---|---|
Large panel capable | yes | no | yes | no |
Multi-junction capable | yes | no | yes | yes |
Spectral & Spatial control | yes | no | no | no |
Many applications | yes | no | limited | no |
Flexible test options | yes | no | no | no |
Reduced manufacturing costs | yes | limited | limited | limited |
Photovoltaic space heritage | yes | no | yes | yes |