Preparation of perovskite-nano-germanium particles organic-inorganic hybrid solar cells

A solar cell, inorganic composite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problem of perovskite solar cells' poor long-wavelength light absorption coefficient capability, inability to effectively absorb and utilize long-wavelength sunlight, and inability to guarantee successful performance. The large-area uniformity of the film can be improved to improve the carrier transport capacity, realize large-scale industrial production, and improve the long-wave response range.
CN107240645BInactive Publication Date: 2019-06-04NANKAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANKAI UNIV
Publication Date
2019-06-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing an organic-inorganic composite solar cell based on perovskite-nano-germanium particles. The method comprises: preparing a titanium dioxide electron transport layer on conductive glass; preparing germanium nanoparticles by PECVD; using nano-germanium Particle-methylammonium iodide-lead chloride-dimethylformamide mixed precursor; the perovskite-nano-germanium particle composite active layer was prepared on the electron transport layer by ultrasonic spraying; the perovskite-nano-germanium particle A P-type organic conductive layer is deposited on the composite active layer; a metal electrode layer is deposited on the P-type organic conductive layer. The nano-germanium particles embedded in the perovskite lattice network can expand the long-wave response range of perovskite solar cells, and the nano-germanium particles passivated by the perovskite network can provide parallel transmission channels for carrier transport; ultrasonic The spraying method can improve the utilization rate of raw materials, improve the uniformity of a large area, and is suitable for the requirements of industrial production.
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Description

technical field

[0001] The invention belongs to the technical field of photovoltaics, and in particular relates to a method for preparing a perovskite solar cell. Background technique

[0002] Looking back on the development of solar cells, perovskite solar cells have gone from an initial efficiency of 3.8% to an efficiency of more than 20% in just a few years. Titanium battery research has become a research hotspot in the field of photovoltaics.

[0003] At present, the efficiency of photovoltaic devices based on the perovskite active layer has been maintained at about 20%. In order to further improve the efficiency of the device, many research groups have tried improvement methods such as ultraviolet ozone treatment and the introduction of a modification layer, but the effect is not very satisfactory. A very important reason is that the long-wavelength light absorption coefficient of perovskite solar cells is poor. For example, CH 3 NH 3 PB 3-x Cl x The absorption la...

Claims

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