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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 W at Standard Test Conditions, but it can produce more when the sun is high in the sky and will produce less in cloudy conditions or when the sun is low in the sky. In central Colorado, which receives annual insolation of 2000 kWh/m²/year, such a panel can be expected to produce 400 kWh of energy per year. However, in Michigan, which receives only 1400 kWh/m²/year, annual energy yield will drop to 280 kWh for the same panel. At more northerly European latitudes, yields are significantly lower: 175 kWh annual energy yield in southern England.

Method for preparing solar cell silver wire grid electrode based on photolithographic mask method and liquid phase method

ActiveCN103367541AFinal product manufacturePhotomechanical exposure apparatusSolar cell efficiencyElectrochemical response

The invention discloses a method for preparing a solar cell silver wire grid electrode based on a photolithographic mask method and a liquid phase method. The method disclosed by the invention comprises the following steps: (1) a photoresist template is manufactured: photoresist is uniformly coated on the surface of a silicon substrate by using a spin-coating method, and designed specific graphics on a mask are copied on the silicon substrate through the steps of exposure, development, hardening and the like; (2) Ag particles are deposited by using a chemical method: an electrochemical reaction method is used for depositing the Ag particles on the photoresist template; (3) the photoresist template is removed: the photoresist is removed by using a photoresist remover; and (4) the annealing and sintering are carried out, and after the closely arrayed Ag particles are heated at high temperature, the Ag electrode is formed by mutual communication. The micron-level Ag electrode prepared according to the method has excellent electroconductive performance and a lower reflecting rate, moreover, the preparation process is simple, resource consumption is less, the Ag electrode can well replace a silk screen printed electrode, the efficiency of a solar cell can be improved, and the cost can be lowered.

Method for preparing solar cell silver wire grid electrode based on photolithographic mask method and liquid phase method

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Owner:SOUTH CHINA NORMAL UNIVERSITY

1 results about "Solar cell efficiency" patented technology

Method for preparing solar cell silver wire grid electrode based on photolithographic mask method and liquid phase method

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