In our previous articles, we have gone through a lot of new technologies that are employed to produce solar panels (IBC, Multiple/Multi-Busbar, PERC, Bifacial,…). Today is Heterojunction Technology (HJT) turn.
According to MeyerBurger, Heterojunction cell technology combines the advantages of monocrystalline silicon (c-Si) solar cells with the good absorption and the superior passivation characteristics of amorphous silicon (a-Si) known from a-Si thin film technology using readily available materials. The HJT design is not new. Sanyo (now Panasonic) first pushed this technology into mass production achieving around 20% cell efficiency.
Recently Panasonic demonstrated efficiencies of 24.7% on laboratory scale cells. With the discontinuation of the basic technology patent, heterojunction technology was opened to the public in 2010. Meyer Burger is now offering this appealing technology as a high-performance key technology in the photovoltaic value chain. The simple structure of a HJT cell is shown in the photo. The thin intrinsic a-Si:H layers deposited between the c-Si wafer and doped layers are key to achieving maximum performance from the cell structure.
HJT has different particular benefits, which affect directly the Levelised Cost of Energy by reducing this cost factor significantly: *Significant lower degradation by higher ambient temperature
*Utilization of wider light-spectrum
*Better performance in diffuse light (humidity, dust etc.)
*No sensitiveness to shadowing means no risk of power shortage
*Nearly independency of sun incident angle. —–***—–
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Location: Oslo, Norway
Date: Mar 10, 2019 @ 10:01
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