Novel hybrid photovoltaic cell and preparation method thereof

Abstract

The invention relates to a novel hybrid photovoltaic cell and a preparation method thereof. The method comprises the following steps that a plurality of first grooves and second grooves, which are arranged in parallel and at intervals, are formed in the upper surface and the lower surface of an N-type silicon wafer, wherein the first grooves and the corresponding second grooves are partially overlapped in the vertical direction; a silicon nanowire array is formed on the upper surface of the N-type silicon wafer and on the bottom surfaces and the side surfaces of the first grooves; an N-type heavily-doped phosphorus diffusion region is formed in each second groove in the lower surface of the N-type silicon wafer; a dense P3HT layer, a composite conducting layer and a front grid electrode are formed on the upper surface of the N-type silicon wafer; and a back electrode is prepared on the lower surface of the N-type silicon wafer.

Description

technical field [0001] The invention relates to the technical field of photovoltaic cells, in particular to a novel hybrid photovoltaic cell and a preparation method thereof. Background technique [0002] Because monocrystalline silicon has the advantages of abundant resources, non-toxicity, and strong light-absorbing ability, it has become the main raw material for commercial solar cell production. The photoelectric conversion efficiency of monocrystalline silicon solar cells is very high, but in its production, it requires high-purity silicon wafers, a high-temperature annealing process of up to 1000 degrees Celsius, an etching process with serious environmental pollution, and other complicated manufacturing processes, resulting in The manufacturing cost of this type of crystalline silicon battery is relatively high, and the manufacturing process also has environmental risks. With the development of the solar cell industry, organic solar cells are expected to reduce their...

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Problems solved by technology

The photoelectric conversion efficiency of monocrystalline silicon solar cells is very high, but in its production, it requires high-purity silicon wafers, a high-temperature annealing process up to 1000 degrees Celsius, an etching process with serious environmental pollution, and other complicated manufacturing processes, resulting in The manufacturing cost of this type of crystalline silicon battery is relatively high, and the manufacturing process also has environmental risks

With the development of the solar cell industry, organic solar cells are expected to reduce their production costs due to their advantages such as cheap materials, low annealing temperature, and simple manufacturing process. However, the efficiency of organic solar cells is much lower than that of monocrystalline silicon cells. With the development of time, organic solar cells still have no significant improvement and cannot replace conventional crystalline silicon solar cells.

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