OAI Instruments’ Headquartered in California’s Silicon Valley, OAI combines innovative engineering with lowered total cost of ownership. Affordable, versatile solutions are at the core of the brand. OAI has developed a time-tested platform of modularized subsystems, which serve as the core of their custom configured photolithography systems. This proven approach controls cost, improves reliability, increases system flexibility, and ultimately reduces the cost of ownership. These attributes are present in their solar, photovoltaic, MEMS, and microfluidic industry products as well. All OAI products are proudly manufactured in the USA in San Jose, California and are in use worldwide. OAI is a long-time member of SEMI and a founding member of the MEMS & Sensors Industry Group.
Solar Photovoltaic
As wide spread photovoltaic use began nearly 20 years ago, OAI made a commitment to focus on this nascent industry. In the ensuing decades, OAI has played a part in advancing solar/PV technology by facilitating growth and manufacturing scale. OAI instruments and measurement tools are utilized to reduce cost, increase reliability, and improve process efficiency.
- Trisol™ Single Long Pulse Solar Simulator (SLPSS) & I-V Test System
The OAI Test System for HIGH EFFICIENCY SOLAR CELLS overcomes the limitations of flash testing by providing a highly optimized pulse width and voltage sweep rate to match the cell’s dielectric response speed. As a result, the system produces extremely accurate measurements of solar cell efficiency leading to increased profitability.
Advances in mono-crystalline Si, multi-crystalline Si, HIT, and backside-contact type based solar cell design and processing 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 an extremely short pulse duration, in the range of 5 -50ms, and require fast voltage sweep rates. Testing solar cells with flash testers produce I-V curve hysteresis when sweeping in both forward and reverse directions, resulting in inconsistent fill-factor (FF) values and lower cell efficiency measurements.
Research shows that High Efficiency Cells require a pulse width in the range of ~75–200ms and a working range of <15V/sec voltage sweep rates. This presents a significant challenge for the flash test system to accurately determine the true performance of these advanced High Efficiency Solar Cells. OAI‘s new, Single Long Pulse Solar Simulator (SLPSS) and I-V Test System overcome the limitations of flash testers and provide exceptionally accurate measurements for various types of High Efficiency Solar Cells. An excellent choice for both R&D and production environments, the new SLPSS solves the unique measurement challenges of both High Efficiency and High Capacitance Solar Cells by providing an optimized long pulse width and voltage sweep rate combined with a unique algorithm to correctly measure the I-V curve and ascertain the true fill-factor (FF) and efficiency of Solar Cells.
FEATURES
Accurate measurement of High Efficiency / High Capacitance Cells
Perfect for R&D and production
Improves cell binning accuracy
Advanced Uniform Beam Optics
Beam size from 156mm–300mm
Meets JIS, IES, ASTM Standards for Class AAA performance
Longest working distance
Measures up to ±10A to ± 20A /200W
In-situ normalized (corrected) I-V curve
Continuous feedback compensates for long & short-term lamp instability
Auto – adjusting reference ratio eliminates constant, manual lamp power adjustment
Graphical / tabular QC monitoring
Easily integrated with in-line sorter
Better than 1,300,000 cell passes per lamp*
Better than 99% uptime
- Calculated at 1300 cell passes/hr (minimum 1000 hour lamp life)
Trisol™ Single Long Pulse Solar Simulator (SLPSS) & I-V Test System Test system for high efficiency solar cells OAI’s SLPSS system utilizes a Single Long Pulse (SLP) Class AAA Solar Simulator that comes in a variety of models and aperture sizes (156mm x 156mm, 208mm x 208mm, and 300mm x 300mm). With Advanced Uniform Beam Optics, (which includes proprietary coated mirrors, filters, and a beam uniformity integrator), OAI’s solar simulator delivers highly accurate, collimated beams with the longest working distances. All of OAI’s solar simulators are certified to ASTM E927-05, IEC 60904-9 (2007), and…
