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Solar battery based on linear-chain organic diamine low-dimensional perovskite and preparation method and application of solar battery

A solar cell, perovskite technology, applied in circuits, electrical components, electrical solid devices, etc., can solve the problems of limited charge transport, low photoelectric conversion efficiency, etc., to achieve simple steps, high stability, and promote the commercialization process. Effect

Active Publication Date: 2018-07-27
NANJING UNIV OF TECH
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Problems solved by technology

But at the same time, the organic amine molecules form an insulating layer in the middle of the inorganic layer, which limits the charge transport and leads to low photoelectric conversion efficiency.

Method used

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  • Solar battery based on linear-chain organic diamine low-dimensional perovskite and preparation method and application of solar battery
  • Solar battery based on linear-chain organic diamine low-dimensional perovskite and preparation method and application of solar battery
  • Solar battery based on linear-chain organic diamine low-dimensional perovskite and preparation method and application of solar battery

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[0041] This example is the preparation of low-dimensional perovskite solar cells based on organic diamines of different carbon chains of the present invention, so as to fully understand the present invention. It mainly includes the following steps:

[0042] Step 1) Take 90ml of methylamine and place it in a round-bottomed flask in an ice-water bath, and slowly add 27.6ml of glacial acetic acid dropwise to it. After the ice-water bath for 2 hours, it is rotary evaporated at 55°C until no droplets drip to prepare methylamine acetate for later use.

[0043] Step 2) Put a certain amount of different carbon chain organic diamines in a round-bottomed flask in an ice-water bath, add HI to it at a ratio of 1:2.1 by molar ratio. After an ice-water bath for 2 hours, spin steam at 55°C until there are no droplets. After dropping, the solid was washed with ether and dried under vacuum at 60℃ to obtain (NH 3 (CH 2 ) X NH 3 )I 2 (x=2-6) Solid.

[0044] Step 3) Cleaning the ITO conductive glass, t...

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Abstract

The invention relates to a solar battery based on linear-chain organic diamine low-dimensional perovskite and a preparation method and application of the solar battery and belongs to the field of optoelectronic materials and instruments. According to the preparation method, different kinds of carbon-chain organic diamine is separately dissolved with methylamine chloride and lead iodide according to different stoichiometric ratios in an acetic acid methylamine solution to prepare a perovskite precursor solution, and then a heating spin-coating method is utilized to rotatably coat an ITO substrate on which PEDOT is sedimented with the perovskite precursor solution; a compact, uniform and high-stability perovskite thin film is formed after annealing, and the whole process is completed in theair. Then, the thin film is rotatably coated with a PCBM electronic transmission layer, then a vacuum evaporation technology is utilized for vacuum evaporation of a modifying layer LiF and electrodesmade of metal Al to complete preparation of components.

Description

Technical field [0001] The invention relates to a low-dimensional perovskite solar cell based on linear organic diamine and a preparation method thereof, in particular to a low-dimensional perovskite solar cell which can achieve high efficiency and high stability by using organic diamine, belonging to Optoelectronic materials and technology fields. Background technique [0002] Facing the current energy shortage problem, using photovoltaic effect to convert solar energy into electricity has become one of the important methods to meet energy demand. In recent years, perovskite solar cells have attracted people's attention with their low cost, simple preparation process, and high photoelectric conversion efficiency. In just a few years, their photoelectric conversion efficiency has reached 22.7%. However, due to its instability to water, oxygen, light, high temperature, etc., the practical application of perovskite solar cells is greatly restricted. [0003] In order to overcome th...

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Application Information

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IPC IPC(8): H01L51/56H01L51/50
CPCH10K50/15H10K71/00
Inventor 陈永华牛婷婷夏英东黄维
Owner NANJING UNIV OF TECH
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