Publication

High-efficiency microcrystalline silicon single-junction solar cells

Christophe Ballif, Matthieu Despeisse, Jordi Escarre Palou, Mathieu Gérard Boccard, Grégory Bugnon, Gaetano Parascandolo, Simon Hänni
2013
Journal Articles

Abstract

This short communication highlights our latest results towards high-efficiency microcrystalline silicon single-junction solar cells. By combining adequate cell design with high-quality material, a new world record efficiency was achieved for single-junction microcrystalline silicon solar cell, with a conversion efficiency of 10.69%, independently confirmed at ISE CalLab PV Cells. Such significant conversion efficiency could be achieved with only 1.8 µm of Si.

Official source

https://infoscience.epfl.ch/entities/publication/cd629a4d-c266-4892-a859-c8310174523b

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Christophe Ballif, Matthieu Despeisse, Jordi Escarre Palou, Mathieu Gérard Boccard, Grégory Bugnon, Gaetano Parascandolo, Simon Hänni
2013
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/cd629a4d-c266-4892-a859-c8310174523b

About this result

Related concepts (17)

Solar-cell efficiency

Solar-cell efficiency refers to the portion of energy in the form of sunlight that can be converted via photovoltaics into electricity by the solar cell. The efficiency of the solar cells used in a photovoltaic system, in combination with latitude and climate, determines the annual energy output of the system. For example, a solar panel with 20% efficiency and an area of 1 m2 will produce 200 kWh/yr at Standard Test Conditions if exposed to the Standard Test Condition solar irradiance value of 1000 W/m2 for 2.

Solar cell

A solar cell, or photovoltaic cell, is an electronic device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical phenomenon. It is a form of photoelectric cell, defined as a device whose electrical characteristics, such as current, voltage, or resistance, vary when exposed to light. Individual solar cell devices are often the electrical building blocks of photovoltaic modules, known colloquially as solar panels.

Energy conversion efficiency

Energy conversion efficiency (η) is the ratio between the useful output of an energy conversion machine and the input, in energy terms. The input, as well as the useful output may be chemical, electric power, mechanical work, light (radiation), or heat. The resulting value, η (eta), ranges between 0 and 1. Energy conversion efficiency depends on the usefulness of the output. All or part of the heat produced from burning a fuel may become rejected waste heat if, for example, work is the desired output from a thermodynamic cycle.

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