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Solar cell of high-efficiency planar heterojunction perovskite structure having interface modification layer formed by [6,6]-phenyl group-C61-butyric acid (PCBA)

A technology for solar cells and interface modification layers, which is applied in circuits, photovoltaic power generation, electrical components, etc.

Inactive Publication Date: 2016-10-05
薄志山 +3
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However TiO 2 As a p-i-n heterojunction solar cell as an electron transport layer, the preparation of the perovskite active layer without a mesoporous structure requires a relatively complicated process (such as evaporation, solvent atmosphere, two-step method, etc.). At present, there is no interface modification. only dense TiO 2 Layered planar heterojunction high-efficiency perovskite solar cell devices

Method used

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  • Solar cell of high-efficiency planar heterojunction perovskite structure having interface modification layer formed by [6,6]-phenyl group-C61-butyric acid (PCBA)
  • Solar cell of high-efficiency planar heterojunction perovskite structure having interface modification layer formed by [6,6]-phenyl group-C61-butyric acid (PCBA)
  • Solar cell of high-efficiency planar heterojunction perovskite structure having interface modification layer formed by [6,6]-phenyl group-C61-butyric acid (PCBA)

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Embodiment Construction

[0016] 1.C 60 The synthetic method of derivative PCBA

[0017] Dissolve 100 mg of commercial PCBM in chlorobenzene and reflux for 3 hours under nitrogen atmosphere. 2mL of 12M hydrochloric acid and 5mL of acetic acid were added in batches. The mixture was refluxed for 16 hours. Most of the solvent was distilled off under reduced pressure. The crude product was precipitated with methanol to obtain purified PCBA. The yield was 56%.

[0018] 2. Device fabrication process

[0019] (1) Cut the commercialized FTO glass to obtain a glass piece of 1.5*5cm, and etch it with zinc powder / hydrochloric acid to obtain a suitable shape as the negative electrode of the battery.

[0020] (2) Spin-coat a butanol solution of tetraisopropyl titanate on the surface of the treated FTO, bake it at 125°C for 15 minutes to remove the solvent, then put it in a tube furnace for heat treatment at 500°C for 60 minutes, and cool it down naturally to obtain a dense TiO 2 The thin film acts as an ele...

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Abstract

The present invention relates to a solar cell of a high-efficiency planar heterojunction perovskite structure having an interface modification layer formed by a [6,6]-phenyl group-C61-butyric acid (PCBA). The solar cell is characterized in that iodide perovskite ABI3 is prepared on the FTO / compact TiO2 surface of imporous TiO2, wherein A is the Pb element, and B is organic ammonium iodate CH3NH3I; a perovskite material is made from CH3NH3PbI3, NH2=CHNH3PbI3, CH3NH3SnI3, NH2=CHNH3SnI3 and the like and is good in light absorption capacity, photovoltaic conversion capacity and electron hole transporting capacity. An electron transfer layer which comprises TiO2, ZnO and the like and a hole transporting layer which comprises Spiro-OMe TAD and the like are introduced into the interface of a perovskite active layer and an electrode, so that a perovskite structure-based solar cell device can be constructed. The solar cell is simple in material compounding and low in cost. The device formed is high in stability and long in service life.

Description

technical field [0001] The invention belongs to the technical field of photoelectric materials, and in particular relates to a planar heterojunction solar cell based on perovskite. Background technique [0002] Since June 2013, a new solar cell based on organic / inorganic composite perovskite materials (perovskite materials) has attracted great attention, and related work was rated as one of the top ten international scientific and technological advances in 2013 by the journal Science . This new type of all-solid-state planar solar cell has demonstrated the advantages of high conversion efficiency greater than 15%, simple preparation process of liquid / gas phase, and extremely low processing cost. And in the short term, the conversion efficiency can be increased to 19.3%, presenting a bright prospect, which may have a huge impact on the entire solar energy science and technology industry as well as human economic and social life. The Spiro-OMeTAD-like hole-transport layer ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCY02E10/549
Inventor 薄志山李文华李翠红董阳
Owner 薄志山
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