Technical assistance report on Photovoltaic Solar Cell Design and Manufacturing in Iran

This report provides the outcomes of the CTCN technical Assistance Response plan regarding the assessment of current PV production capacity and initial assessment to identify status of local PV technology, material supply and, knowledge infrastructure, that need to be resolved to establish a striving PV industry in Iran. Following an initial...

Brochure Solar Energy

The world of solar energy is undergoing revolutionary change. Prices have eroded enormously and profi t margins have disappeared. This calls for rapid action to reduce production costs and improve effi ciency of the solar panels. To tackle this we need to jointly develop and implement improved processes and technologies. The Energy research...

High power n-type Metal-Wrap-Through cells and modules using industrial processes

This paper reviews our recent progress in the development of metal wrap through (MWT) cells and modules, produced from n-type Czochralski silicon wafers. The use of n-type silicon as base material allows for high efficiencies: for front emitter-contacted industrial cells, efficiencies above 20% have been reported. N-type MWT (n-MWT) cells...

Brochure MWT cell- and module technology

Metal wrap-through (MWT) back contact cell- and module technology is a proven platform for lower cost of ownership and higher power output for wafer-based silicon solar modules. Read here more about MWT cell- and module technology and what ECN can do for you.

279 Watt Metal-Wrap-Through module using industrial processes

This paper describes results of metal wrap through (MWT) cells produced from n-type Czochralski silicon wafers, and modules produced from those cells. The use of n-type silicon as base material allows for high efficiencies: for front emitter contacted industrial cells, efficiencies up to 20% have been reported. MWT cells allow even higher cell...

0.35% Absolute Efficiency Gain of Bifacial N-type Si Solar cells by Industrial Metal Wrap Through Technology

N-type Metal Wrap Through (n-MWT) is presented as an industrially promising back-contact technology to reach high performance of silicon solar cells and modules. It can combine benefits from both n-type base and MWT metallization. In this paper, the integration of the MWT technique with a commercial industrial bifacial n-type Si Solar cell (239...

High efficiency n-type metal wrap through cells and modules

This paper describes results of metal wrap through (MWT) cells produced from n-type Czochralski silicon wafers, and modules produced from those cells. The use of n-type silicon as base material allows for high efficiencies: for front emitter contacted industrial cells, efficiencies upto nearly 20% have been reported. MWT cells allow even higher...

Further efficiency improvements of the n-type MWT Si solar cells using industrial processes

The use of n-type silicon allows for high efficiencies: efficiencies up to 20% have been reported for industrial cells. MWT cells allow even higher cell efficiency due to reduced front metal coverage. The efficiency of MWT cells produced by industrial processes reproducibly exceeds the efficiency of front contact cells based on the same...

Efficiency improvements by Metal Wrap Through technology for n-type Si solar cells and modules

N-type Metal Wrap Through (n-MWT) is presented as an industrially promising back-contact technology to reach high performance of silicon solar cells and modules. It can combine benefits from both n-type base and MWT metallization. In this paper, the efficiency improvements of commercial industrial n-type bifacial Si solar cells (239cm2) and...

Progress in low-cost n-type silicon solar cell technology

This article will review our recent progress in development of high-efficiency cells on n-type monocrystalline Si wafers. With boron-doped front emitter, phosphorous BSF, and screen-printed metallisation, at this moment such cells reach an efficiency of over 19%. We describe recent results of processing with reduced front contact area, and...

High efficiency N-type Si Metal-Wrap-Through cells from lab to fab

Metal-wrap-through (MWT) cell technology represents the smallest evolutionary step from mainstream Si PV production to high-efficiency rear-contact cell and module technology. The technology builds on standard 'H-pattern front contact' cell technology by adding a small number (10-30) of via-holes to wrap the front metallisation to the rear...

Progress in N-type Si Solar Cell and Module Technology for High Efficiency and Low Cost

A novel high efficiency solar cell and module technology, named PANDA, using crystalline n-type CZ Si wafers has moved into large-scale production at Yingli. The first commercial sales of the PANDA modules commenced in mid 2010. Up to 600MW of mass production capacity from crystal-Si growth, wafer slicing, cell processing and module assembly...

Methods of emitter formation for crystalline silicon solar cells - a review

The emitter or p-n junction is the core of crystalline silicon solar cells. The vast majority of silicon cells are produced using a simple process of high temperature diffusion of dopants into the crystal lattice. This paper takes a closer look at the characteristics of this diffusion and possible variations in the process, and asks whether this...

All-side SiNx passivated mc-Si solar cells evaluated with respect to parasitic shunting

In search of solar cell concepts that allow processing thinner wafers (<150 micron), the conventional full Al rear side is replaced by an open rear metallization combined with a dielectric passivation layer. We show a gain of 2.1% (relative) in the product of Jsc??Voc, when we apply a passivated SiNx dielectric layer and local Al contacts...

Parasitic shunt losses in all-side SiNx passivated mc-Si solar cell

In search of solar cell concepts that allow processing thinner wafers (<150 micron), the conventional full Al rear side is replaced by an open rear metallization combined with a dielectric passivation layer. We show a gain of 2.1% (relative) in the product of J?Ƴc?Voc, when we apply a passivated SiNx dielectric layer and local Al contacts...

Inline processing of crystalline silicon solar cells: the holy grail for large-scale manufacturing?

Lowering the cost of production of solar cells requires higher throughputs and higher production yields for thinner and more fragile silicon wafers, and inline processing could hold the key. However, current processes used in production do not enable full inline processing and often require a substantial amount of handling between process...

Surface modification for efficiency improvement of inline solar cell manufacture

Inline processing, one of the fastest-growing production processes for crystalline silicon solar cells, uses continuously operated belt furnaces to achieve higher overall throughput compared with traditional batch processing. A second, major advantage of inline processing is improved manufacturing yields through reduced breakage of todays...