Solar simulator

Introduction of Peccell Solar Simulators - Compact integrated solar simulators for Laboratory use

What type solar simulator do you need?
Solar simulator is one of the essential equipment for studying solar cells. Everyone wants to have a solar simulator. We want to know what efficiency a solar cell shows just after we assemble the solar cell. The requirement for a solar simulator is a stable irradiance and illumination uniformity. If your solar simulator emits very fractural illumination, solar cell outputs are always unstable. One of the difficulties is uniformity of the illumination. Usual solar simulator emits illumination in shape of square or circle, and usually the illumination area is larger than a size of a solar cell. So, desirably, same outputs occur anywhere a solar cell is put under the illumination. However, these stable illumination and irradiation are difficult to be realized. And therefore, the conventional solar simulators are very big size, which stabilize a power supply.
Are a Lamp House and Power Supply are separated?
Things at which solar simulator user is surprised are a size and a weight of a power supply of the solar simulator. In a catalogue, usually a lamp house of a solar simulator is shown in very beautiful, and the features are showed in detail. But, sometimes, you are not aware of its power supply. The thing is very similar to that you are not aware of an AC adaptor of a notebook computer. You usually check of features and specifications of a main part of a notebook computer, however, you don’t know a size of an AC adapter. So, sometimes, you can’t bring your AC adapter in your favorite bag. A similar situation something happens in the case of a solar simulator. You buy a new solar simulator, and it comes to your laboratory, and you’re surprised at the size and the weight of the power supply! The power supply may bother you. And sometimes the weight of power supply is 30kg or more. You don’t bring it by yourself alone. And of course, a desk or a bench where the power supply and the solar simulator are placed will be enough strong. Of course, the connection cables are also very complicated.
No Space for Power Supply
No-space, but a solar simulator is needed
When your laboratory goes into the solar cell researches as a new topic, usually your laboratory is very packed by many equipment and laboratory goods. However, a solar simulator needs a very big space. Because a solar simulator uses very inefficient Xe arc lamp, which emits a very similar spectrum to real sunlight. And usually a power supply of a Xe arc lamp has a big stabilizer of output voltages and currents, which emits some magnetic fields or electric fields, so should be separated from the lamp house. You have to make a spare space for a solar simulator and sometimes something should be taken away.
Are there compact solar simulators for narrow laboratory space?
We also were one of the solar simulator users in Japan. We, Peccell Technologies, inc. are a university based venture company basically based on electrochemistry and organic chemistry. And we have been developed a frontier plastic film based dye-sensitized solar cells for 7 years and more. So, of course, we must need to use solar simulators every day. However, the universities in urban area in Japan have a space problem; very narrow laboratories are packed by much equipment and also by students and researchers. But as our researches goes, our necessity of the solar simulators increases, and we want to have many solar simulators in our laboratory. So, we decided to develop the solar simulators by ourselves. Our original design solar simulators have been built; it is easy to use it for us.
User Friendly Solar Simulator
Peccell’s solar simulators are developed by dye-sensitized researchers, who use them every day. So, the design is basically based on the user’s point of view.
Solar Simulator
What are needed for measuring I-V curves of solar cells?

What are needed for measuring I-V curves of solar cells?
(1) Solar Simulator
Solar Simulator is equipment irradiating light very similar to sun light. And its specifications are determined by industrial standards, for example JIS in Japan.

Table 1. Solar Simulator Specifications
JIS C8912, C8933 Class A Class B Class C

Spectral Match
(fraction of ideal percentage)

0.75 - 1.25

0.70 - 1.30

0.60 - 1.40

Non-Uniformity of Irradiance




Temporal Instability




Spectral Matching - How is a solar simulator spectrum similar to sun light? Non-Uniformity of Irradiance - How is a uniformity of irradiation area? Temporal Instability - How is irradiance stable against time?
User chooses a solar simulator depending on your purpose of research and you budget.
(2) Power Supply of Solar simulator
Usually, conventional type solar simulators have a separated power supply for Xe lamp. As mentioned above section, Xe arc lamp usually needs highly stable power supply. However, user sometimes forgets to prepare a space for a power supply.
On the other hand, Peccell’s solar simulators (PEC-L01, and PEC-L15) have an integrated unit body, so, user will only consider the main body’s setting place.
Solar simulator
(3) Sourcemeter
Sourcemeter is measuring equipment current and voltage, which can apply bias voltage during measurements. Peccell supplies simple I-V measurement software operating Keithley 2400 series sourcemeter. Of course user uses a potentio/galvanostat or something to measure I-V curves.
(4) PC
To process the data, user uses usually a personal computer. And to connect PC with measurement equipment, some interfaces are needed. GPIB, RS-232C serial connections are well-known. RS-232C is a very simple connection, which is not equipped in recent computer but very convenient for user to make program. Usually Peccell supplies PC with a serial port.
(5) Silicon detector/Illumination meter or Irradiance meter
It is very important to adjust solar simulator irradiance for measuring and calculating I-V curves and efficiencies. So, usually user has to check an irradiance of a solar simulator. Peccell recommends user uses silicon photodiode detector with a small active area. PEC-SI01 and PEC-SI02 series are supplied. They have a spectral response matching with DSC/amorphous silicon and crystalline silicon, respectively.
Standard solar irradiance is 100mW/cm2 (1000W/m2), which roughly corresponds to 100,000 lux by illuminator. Under room light conditions, irradiance is around 500 lux, 1000 lux or something. User knows the irradiances are very different between outdoor and indoor.
Solution: Peccell’s solar simulator PEC-L series

Peccell has a lineup of solar simulators, which will meet requirements for your research.
PEC-L01 Portable Solar Simulator
PEC-L01 Portable Solar Simulator
Portable, Compact, Solar Simulator
・Lamp house, Power Supply, Unit Body
・Illumination head 360o Rotatable
・5cm square Optical filter available
・Most reasonable solar simulator of Peccell
*Photo includes options, PEC-NS01, 10inch note book computer
PEC-L12 Solar Simulator (JIS AAA)
PEC-L12 Solar Simulator (JIS AAA)
5cm square JIS Class AAA Solar Simulator
・Small size power supply makes it easily set on a desk
・Illumination head 360o Ratable
・5cm square Optical filter available
・Very low noise Shutter
PEC-L15 Solar Simulator
PEC-L15 Solar Simulator
15 cm square illumination area on your Desktop
・Lamp House, Power Supply, Unit Body
・Illumination head rotatable (Down, Up, Side)
・5cm square Optical filter available
・Fast Response Shutter (100 ms)
・Weight just 16 kg ・I/O port available
Solar Simulator
Solar Simulator
Solar Simulator
Solar Simulator
Solar Simulator


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