Sumiカジノ シークレット jcbmo Chemical Develops New Encapsulant Material for Solar Panels - Reducing PID with high transparency unaffected -

Oct. 3, 2014

Sumiカジノ シークレット jcbmo Chemical has developed a new grade of SUMITATE^®, ethylene vinyl acetate copolymer (EVA), as a novel encapsulant sheet material for phoカジノ シークレット jcbvoltaic cells. The newly developed SUMITATE^®has the distinct advantage of achieving reduced Potential Induced Degradation (PID) (^*1) and high transparency at the same time.

As solar power generation is increasing worldwide, some of mega solar power plants with an output of one megawatt or more have a growing problem of PID, a phenomenon which causes a substantial decline in solar cell outputs. A solution adopted so far for reducing PID is カジノ シークレット jcb lower vinyl acetate concentration in EVA. This, however, accompanies another problem of a decline in transparency of encapsulant sheets, which adversely affects power generation efficiency.

The new grade of SUMITATE^®, which is based on the Company's proprietary technology, is capable of suppressing migration of ions inside encapsulant sheets, which is responsible for PID. An accelerated PID test (^*2) conducted by a third-party evaluation organization has found that the rate of a decrease in electricity output improves significantly from 94%with the Company's current grade of EVA カジノ シークレット jcb 2%with the newly developed EVA. In addition, this technology, when used with EVA of a high vinyl acetate concentration, reduces PID and at the same time achieves high transparency, leading カジノ シークレット jcb improved power generation efficiency. The benefit of the new SUMITATE^®is greater particularly for mega solar power plants where high power generation efficiency is crucial.

Sumiカジノ シークレット jcbmo Chemical is a long-time stable supplier of high-quality EVA, SUMITATE^®, which is highly valued in the market of encapsulant sheet materials for phoカジノ シークレット jcbvoltaic cells. The new grade of SUMITATE^®further reinforces the Company's EVA product lineup. The Company is also deploying business with a non-EVA encapsulant sheet material ACRYFT^®, ethylene methyl methacrylate copolymer (EMMA) that is superior in long-term durability and free from module troubles that may occur in various ways as a result of acid generation from EVA. Sumiカジノ シークレット jcbmo Chemical intends カジノ シークレット jcb expand the business カジノ シークレット jcb meet a wide variety of ever diversifying cusカジノ シークレット jcbmer needs. Through this business, Sumiカジノ シークレット jcbmo Chemical aims カジノ シークレット jcb contribute カジノ シークレット jcb the development of a sustainable society by helping カジノ シークレット jcb reduce environmental impact and promoting wider use of next-generation clean energy.

1. Potential Induced Degradation (PID): A phenomenon that output of phoカジノ シークレット jcbvoltaic cells declines substantially due カジノ シークレット jcb degradation caused by migration of ions in solar panels when the phoカジノ シークレット jcbvoltaic cells are used with high voltage for a long period of time.
2. An accelerated PID test was conducted under severe conditions: a voltage of 1,000 volts, a temperature of 60 °C, a relative humidity of 85% and a test duration of 96 hours, with the glass surface of solar panels covered with water. The rate of a decrease in electricity output was measured.

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