Preparation method of semiconductor nano-wire-based organic/inorganic composite solar cell

Abstract

The invention discloses a preparation method of a semiconductor nano-wire-based organic / inorganic composite solar cell, belonging to the technical field of new energy resources. The method is characterized by comprising the following steps: preparing nano silicon with good light absorption performance in a visible light area by an electrochemical corrosion or hydrothermal corrosion technology; growing a zinc oxide or titanium dioxide or cadmium selenide nano-wire array on the nano silicon substrate by a high-temperature chemical vapor deposition method or low-temperature liquid phase chemical method; spinning poly-3-hexylthiophene (P3HT) or poly[2-methoxy-5-(2-ethyhexyloxy)-1,4-p-phenylene vinylene] (MEH-PPV) or poly(3-octylthiophene) (P3OT) on the nano-wire array to form a three-layer composite structure system; and finally preparing a magnesium fluoride or calcium fluoride surface anti-reflection film and metal film electrode to form a solar cell device. The process disclosed by the invention is simple, the operation is simply and easily implemented, the preparation conditions are mild, the repetition rate reaches 100%, and the prepared organic / inorganic composite material system is an important material for manufacturing a full-silicon-based solar cell device in the future.

Description

Technical field: [0001] The technical field of the present invention belongs to the technical field of high-efficiency solar cells. The development of related devices has good technical application prospects, and relates to a class of nano-silicon, II-VI group compounds zinc oxide, titanium dioxide, cadmium sulfide, cadmium selenide, and cadmium telluride Nanowire arrays, organic polymers poly3-hexylthiophene (P3HT), poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-styrene] (MEH-PPV), poly 3-Octylthiophene (P3OT), three different semiconductor materials are combined to prepare an organic / inorganic composite solar cell structure with high conversion efficiency and stable performance of "organic polymer / II-VI compound nanowire / nano-silicon" new technology. The organic / inorganic composite solar cell realized by the technology of the invention is a technological development attempt of the existing silicon crystal solar cell, conforms to the current energy technology direction of the countr...

AI Technical Summary

Problems solved by technology

However, in this kind of organic / inorganic composite system, due to the discontinuous existence of inorganic nanorods in the polymer, that is to say, the carriers do not directly and rapidly transport to the bottom electrode through a simple channel, so that the electrons in the nanocrystal The medium transport still has to pass through multiple grain boundaries, which will not only greatly reduce the electron transport rate, but also the defects at the grain boundaries will trap a large number of conduction electrons, resulting in a decrease in the energy conversion efficiency of the battery.

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