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Perovskite phase organic metal halide-based solar cell and manufacturing method thereof

A solar cell and organometallic technology, applied in the field of photovoltaics, can solve the problems of reducing semiconductor photovoltaic performance, small grain size of semiconductor layer, complicated process, etc., and achieve the effects of improving photovoltaic conversion efficiency, optimizing crystal growth, and reducing costs

Active Publication Date: 2015-03-04
HANGZHOU MICROQUANTA SEMICON CO LTD
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  • Description
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Problems solved by technology

[0007] This method has the following disadvantages: in the process of semiconductor formation, the halogen element used is iodine. Due to the high solubility of iodine in the solution, it is difficult to control the growth rate of the semiconductor crystal. The particle size is small, and there are a large number of crystal boundaries that are not conducive to the transport of electrons and holes, thus reducing the photovoltaic performance of the semiconductor
Titanium dioxide nanoporous structure is formed by spin-coating titanium dioxide nanoparticles, which is complicated and not conducive to commercial mass production

Method used

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  • Perovskite phase organic metal halide-based solar cell and manufacturing method thereof
  • Perovskite phase organic metal halide-based solar cell and manufacturing method thereof
  • Perovskite phase organic metal halide-based solar cell and manufacturing method thereof

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Embodiment 1

[0046] figure 1 It is a structural diagram of the solar cell of this embodiment, which includes a substrate 1 , an electron transport layer 2 , a perovskite phase organic metal halide semiconductor layer 3 , a hole transport layer 4 and a counter electrode layer 5 from bottom to top.

[0047] In this embodiment, the substrate 1 is indium tin oxide glass. The electron transport layer 2 is a dense titanium dioxide nano film with a surface roughness of less than 10nm and a thickness of 350nm. The thickness of the perovskite phase organic metal halide semiconductor layer 3 is 350nm, and the perovskite phase organic metal halide is CH 3 NH 3 PB 3-n Cl n , n is 0.05 in this embodiment. The hole transport layer 4 is made of Spiro-OMeTAD (2,2',7,7'-tetrakis[N,N-bis(4-methoxyphenyl)amino]-9,9'-spirobifluorene) , with a thickness of 350nm. The electrode layer 5 is made of Au and has a thickness of 60 nm.

[0048] The solar cell of this embodiment is prepared by the following ste...

Embodiment 2

[0062] The structure of the solar cell of this embodiment is the same as that of Example 1, and the preparation method is the same as that of Example 1, except that the step (S2) prepares the perovskite phase organic metal halide semiconductor layer on the electron transport layer, the step (S2) 2) General PbX 2 layer placed in CH 3 NH 3 PbX was soaked in 2-propanol solution of Y for 20s 2 The layer was soaked in 2-propanol solution for 1-2s to prevent PbX 2 layer for surface treatment. In actual operation, the substrate in step (1) is directly immersed in 2-propanol solution for 1-2 seconds.

[0063] The solar cell of the present embodiment is at 100mW / cm 2 The current-voltage curve under AM1.5 sunlight is as follows figure 2 Shown in the corresponding curve of embodiment 2. Its volt-ampere performance curve is shown in Table 1.

Embodiment 3

[0065] The structure of the solar cell of this embodiment is the same as that of Example 1, and the preparation method is the same as that of Example 2, except that the PbX in step (1) 2 for PbCl 2 and PbI 2 mixture, and PbCl 2 and PbI 2 The molar ratio of the mixture is 1:9. CH in step (2) 3 NH 3 Y is CH 3 NH 3 I.

[0066] The solar cell of the present embodiment is at 100mW / cm 2The current-voltage curve under AM1.5 sunlight is as follows figure 2 Shown in the corresponding curve of embodiment 3. Its volt-ampere performance curve is shown in Table 1.

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Abstract

The invention discloses a perovskite phase organic metal halide-based solar cell and a manufacturing method thereof. The solar cell uses a dense titanium dioxide nano film as an electron transfer layer, the surface recombination speed between the electron transfer layer and a semiconductor layer can be reduced, and a photovoltaic conversion rate of a photovoltaic device is improved; the solar cell with the structure can use a normal temperature and pressure full liquid phase synthesis method to manufacture the semiconductor layer of a perovskite phase organic metal halide, thereby saving energy consumption needed by manufacturing and reducing the cost of the solar cell. A two-step synthesis method is adopted during the process of manufacturing the semiconductor layer of the perovskite phase organic metal halide, a PbX2 layer formed in the first step is soaked in a 2-propanol solution between the two steps, the second-step synthesis is carried out, and thus, a chlorine and iodine mixed preparation method can be adopted, the halogen ion concentration and the annealing temperature are controlled, crystal growth during a liquid phase precipitation process is optimized, and the photovoltaic conversion efficiency of the solar cell is improved.

Description

technical field [0001] The invention relates to the field of photovoltaic technology, in particular to a solar cell based on a perovskite-phase organometallic halide and a preparation method thereof. Background technique [0002] With the gradual depletion of fossil energy and the gradual strengthening of the society's awareness of environmental protection, solar photovoltaic power generation has the opportunity to replace fossil energy to meet people's daily power needs. A photovoltaic cell is an electronic device that converts light energy directly into electricity. [0003] In the field of solar photovoltaics, silicon-based solar cells have been successfully commercialized. However, silicon material is the basis of silicon-based solar cells, and the purification and production process of silicon usually needs to be carried out under high temperature and high pressure environment, which consumes a lot of energy, resulting in high cost of silicon-based solar cells. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/44H01L51/48
CPCH10K30/00H10K30/80H10K30/81H10K71/00Y02E10/549
Inventor 姚冀众
Owner HANGZHOU MICROQUANTA SEMICON CO LTD
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