In addition to offering the guaranteed calibration accuracy described above, OAI strives for efficient quick calibration turnaround for users of its services. Our onsite Calibration Lab ensures quality and reduces lag time and bottlenecks. OAI guarantees a maximum of ten working days for standard calibration and offers special 24 hour and 48 hour quick-turn service.

For calibration services contact:
calibration@oai-instruments.com

Parameters Tested:

• Open-circuit voltage (OCV)
• Short-circuit current (lsc)
• Maximum power output of the cell (Pmax)
• Voltage at Pmax (Vmp)
• Current at Pmax (Ipm)
• Conversion efficiency
• Fill factor (FF)
• Series Resistance (Rs)
• Shunt Resistance (Rsh)

FEATURES

• Integrates with calibrated reference cell
• Displays temperature readings in °F or °C
• Measures and displays continuous or peak readings
• Connects to USB port for data collection
• Displays reference cell characteristics including: cell type and size, window type, and temperature measurement device type
• Powered by standard wall current or convenient, rechargeable lithium-ion battery pack
• Stores and displays average of recent peak measurements (user settable)
• Comes with two separate thermal measurement connector types (k-type thermocouples and RTD) and is designed for use with either type

With this small, portable, battery powered meter, numerous production flash solar simulators can be tested and compared in a short amount of time, leading to greater production line consistency and throughput. OAI offers the Flash Power Meter configured with a calibrated solar reference cell, which is equipped with a thermocouple. The assembly is manufactured in accordance with IEC–60904-2. Certification is by NIST to the ISO-17025 standard and is traceable to National Renewable Energy Lab (NREL). Other OAI solar products include: a full portfolio of Solar Simulators, I-V Testers, and Test Fixtures. All products are supported by OAI’s global service and application engineering network.

FEATURES

• Samples at speeds up to 4000Hz for accurate flash lamp measurement
• Integrates with calibrated reference cell
• Displays temperature readings in °F or °C
• Measures and displays continuous or peak readings
• Connects to USB port for data collection
• Displays reference cell characteristics including: cell type and size, window type, and temperature measurement device type
• Powered by standard wall current or convenient, rechargeable lithium-ion battery pack
• Stores and displays average of recent peak measurements (user settable)

Comes with two separate thermal measurement connector types (k-type thermocouples and RTD) and is designed for use with either type

Low Dose CPV to 50 Suns

OAI’s standard Class AAA Solar Simulators are fitted with optics that allow them to function both as a standard solar simulator (up to 1.2 Suns) and a low dose (up to 50 Suns) CPV Simulator. Available models are CPV LD15, CPV LD22, and CPV LD50 (as shown in the Product Specification Table within the datasheet). The low dose CPV Simulators are supplied with OAI’s Advanced Uniform Beam Optics, which include proprietary coated mirrors, filters, and a beam uniformity integrator. These optics are then coupled with special concentrating light-pipe attachment optics. Standard Low Dose CPV beam sizes range from 2.5cm x 2.5cm up to 4.5cm x 4.5cm.

Choose from either a 1kW, 1.5kW, or 4.0kW lamp housing to achieve a wide range of concentrating solar light (as shown in the Product Specification Table within the datasheet). Additionally, OAI offers a highly collimated 6 Suns CPV Simulator with half angle <1° (Model CPV LA) for cells measuring up to 156mm x156mm. All of the low dose CPV Simulators use an OAI TriSOL Standard Solar Simulator as the base to deliver highly accurate and collimated beams to the concentrating optics. These TriSOL Standard Simulators are certified to ASTM E927-05, IEC 60904-9 2007, and JIS C8912 Standards for Class AAA performance (Spectral Match 400-1100nm wavelength in 100nm bandwidth increments, Non-Uniformity, and Temporal Instability). The Class A+ Spectral Match (<±12.5%) upgrade is also available using a specially designed filter.

High Dose CPV to 1500 Suns

The High Dose CPV Solar Simulators (Models CPV HD20, CPV HD500, CPV HD1500 & CPV HDLA300) are fully integrated, stand-alone, high concentration simulators. High Dose and small area CPV Simulators are available in three basic configurations: up to 20 Suns in a beam size of 7.5cm x 7.5cm, up to 500 Suns with a 2.54cm x 2.54cm beam size, and up to 1500 Suns with a 1.5cm x 1.5cm beam size. OAI also manufactures a High Dose large area model (Model CPV HDLA300) simulator with 300 Suns intensity with a beam size of 60mm x 60mm. These High Dose CPV simulators are constructed with OAI’s integrated Advanced Uniform Beam Optics, which includes proprietary coated mirrors, attenuation filters, beam uniformity integrator, and fully integrated special concentrating light-pipe optics.

Choose from either a 4.0kW or 7.0kW lamp housing to achieve a wide range of concentrating solar light (as shown in the Product Specification Table within the datasheet). These systems come with an integrated, high-speed shutter that reduces over exposure and sample heating during the measurement. The software shutter control facilitates cell exposure from 5msec to >300msec duration. In comparison to a flash type system, OAI’s continuous high dose CPV simulators provide the capability for complete beam characterization. These CPV Standalone Simulators are certified to ASTM E927-05, IEC 60904-9 2007, and JIS C8912 Standards for Class AAA performance (Spectral Match 400-1100nm wavelength in 100nm bandwidth increments, Non-Uniformity, and Temporal Instability). The Class A+ Spectral Match (<±12.5%) upgrade is available using a specially designed filter.

Advances in mono-crystalline Si, multi -crystalline Si, HIT, and backside -contact type based solar cell design have led to an increase in cell capacitance and resistance by >2 orders of magnitude. This results in a decrease in the cell’s dielectric response speed. Most flash testers provide extremely short pulse duration, and require fast voltage sweep rates. By testing solar cells with flash testers, the results can give inconsistent fill-factor values and lower cell efficiency measurements.

High Efficiency Cells require a pulse width in the range of ˜ 75 -200ms and a working range of <15V/sec voltage sweep rates, creating a significant challenge for flash test systems to accurately determine the performance of these advanced cells. OAI’s new Single Long Pulse Solar Simulator & I -V Test System overcomes these limitations and provides exceptionally accurate measurements for High Efficiency Solar Cells. Perfect for both R&D and production, this test system solves the unique measurement challenges of High Efficiency and High Capacitance Solar Cells by providing an optimized long pulse width and voltage sweep rate combined with a unique algorithm. The result is accurate measurement of the I&V curve and the ability to ascertain the true fill-factor and efficiency of a solar cell.