Perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in the field of solar cells, can solve the problems of affecting the photoelectric conversion efficiency of solar cells, affecting electron transmission, etc., and achieve the effects of improving photoelectric conversion efficiency, easy injection and passage

Active Publication Date: 2016-09-07
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In porous titanium dioxide perovskite solar cells, porous titanium dioxide acts as an electron transport layer, which can affect electron transport, thereby affecting the photoelectric conversion efficiency of solar cells.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: The molar ratio of zinc to peptide in the zinc-doped porous titanium dioxide film is 0.1%:1

[0020] After 10.5 ml of isopropyl titanate and 1.97 ml of glacial acetic acid were mixed and stirred for 15 minutes, 50 ml of deionized water was added, stirred for 1 hour, 0.69 ml of concentrated nitric acid was added, and the molar ratio of zinc to titanium was 0.1%: 1 of zinc acetate was transferred to a water bath at 80 °C for 2 hours, and then transferred to a reaction kettle at 250 °C for 12 hours. After adding 0.4 ml of concentrated nitric acid for sonication, rotary evaporation, washing with alcohol for several times and centrifugation. The resultant was then mixed in 10.08 g terpineol, 0.702 g ethyl cellulose (type 9-11) and 0.54 g ethyl cellulose (type 45-55), stirred, sonicated, and finally subjected to rotary evaporation Then a zinc-doped porous titanium dioxide slurry is obtained.

[0021] The zinc-doped porous titania slurry was spin-coated on the den...

Embodiment 2

[0023] Example 2: The molar ratio of zinc to peptide in the zinc-doped porous titanium dioxide film is 0.2%:1

[0024] After 10.5 ml of isopropyl titanate and 1.97 ml of glacial acetic acid were mixed and stirred for 15 minutes, 50 ml of deionized water was added, stirred for 1 hour, 0.69 ml of concentrated nitric acid was added, and the molar ratio of zinc to titanium was 0.2%: 1 of zinc acetate was transferred to a water bath at 80 °C for 2 hours, and then transferred to a reaction kettle at 250 °C for 12 hours. After adding 0.4 ml of concentrated nitric acid for sonication, rotary evaporation, washing with alcohol for several times and centrifugation. The resultant was then mixed in 10.08 g terpineol, 0.702 g ethyl cellulose (type 9-11) and 0.54 g ethyl cellulose (type 45-55), stirred, sonicated, and finally subjected to rotary evaporation Then a zinc-doped porous titanium dioxide slurry is obtained.

[0025] The zinc-doped porous titania slurry was spin-coated on the den...

Embodiment 3

[0027] Example 3: The molar ratio of zinc to peptide in the zinc-doped porous titanium dioxide film is 0.3%:1

[0028] After 10.5 ml of isopropyl titanate and 1.97 ml of glacial acetic acid were mixed and stirred for 15 minutes, 50 ml of deionized water was added, stirred for 1 hour, 0.69 ml of concentrated nitric acid was added, and the molar ratio of zinc to titanium was 0.3%: 1 of zinc acetate was transferred to a water bath at 80 °C for 2 hours, and then transferred to a reaction kettle at 250 °C for 12 hours. After adding 0.4 ml of concentrated nitric acid for sonication, rotary evaporation, washing with alcohol for several times and centrifugation. The resultant was then mixed in 10.08 g terpineol, 0.702 g ethyl cellulose (type 9-11) and 0.54 g ethyl cellulose (type 45-55), stirred, sonicated, and finally subjected to rotary evaporation Then a zinc-doped porous titanium dioxide slurry is obtained.

[0029] The zinc-doped porous titania slurry was spin-coated on the den...

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Abstract

The invention discloses a perovskite solar cell and a preparation method thereof. The perovskite solar cell comprises a conductive glass layer, a compact titanium dioxide film, a porous titanium dioxide film, a methylamine lead iodine polycrystalline film, a hole-transport material layer and a metal electrode layer in sequence. The perovskite solar cell is characterized in that the porous titanium dioxide film is Zn-doped, and after doping, mole ratio between zinc atoms and titanium atoms is 0.1%-0.4%:1. The perovskite solar cell has the advantages that the Zn-doped porous titanium dioxide is utilized as a photo anode of the perovskite solar cell; a titanium dioxide conduction band can be changed through Zn-doping, and the titanium dioxide conduction band is allowed to move down, so that a gap between a methylamine lead iodine conduction band serving as a perovskite light absorption layer and Zn-doped porous titanium dioxide conduction band is enlarged, electrons are allowed to be easier to inject and pass, and photoelectric conversion efficiency of the perovskite solar cell can be improved.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to a perovskite solar cell and a preparation method thereof. Background technique [0002] Perovskite solar cells have attracted extensive attention in scientific research and industry due to their low cost, simple preparation process, and high photoelectric conversion efficiency. Since its development, perovskite solar cells have made great progress. So far, their highest photoelectric conversion efficiency has exceeded 20%, which greatly exceeds that of dye-sensitized solar cells and organic solar thin-film solar cells. Therefore, perovskite solar cells are low-cost, high-efficiency thin-film solar cells with promising development prospects. [0003] Perovskite solar cells currently have a variety of structures, among which mesoscopic cells containing porous titania are the most important structure. In porous titania perovskite solar cells, porous titania acts as an electron transport...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/44H01L51/46H01L51/48
CPCH10K71/60H10K30/81H10K2102/00Y02E10/549
Inventor 诸跃进刘金旺张京王利明王鹏黄孝坤卢兴伟岳国强
Owner NINGBO UNIV
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