Solar cell of perovskite structure and preparing method of solar cell

A perovskite structure and solar cell technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as single protection, achieve the effects of isolating moisture, improving stability, and improving photovoltaic characteristics

Active Publication Date: 2014-12-03
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the problem of perovskite stabilization technology, aiming at the single protective effect of the post-modification material alumina and the lack of technology in the background technology, the present invention uses atomic layer deposition (ALD) technology to replace the impregnation method, and co-modifies the perovskite film up and down. Thereby providing a new structure of perovskite battery and its preparation method

Method used

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  • Solar cell of perovskite structure and preparing method of solar cell
  • Solar cell of perovskite structure and preparing method of solar cell
  • Solar cell of perovskite structure and preparing method of solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] 1. Select FTO glass with a sheet resistance of 15Ω, a thickness of 2.2mm, and a transmittance of 83% as the substrate material, and then clean it with soap, acetone and ethanol.

[0062] 2. Dense TiO 2 layer preparation

[0063] Same as step 2 in Comparative Example 1.

[0064] 3. Barrier layer Al 2 o 3 Film preparation

[0065] Same as step 3 in Comparative Example 2.

[0066] 4. CH 3 NH 3 PB 3 Preparation of perovskite layer

[0067] Same as step 3 in Comparative Example 1.

[0068] 5. Al insulation layer 2 o 3 Film preparation

[0069] Growth of 3 nm-thick dense Al on perovskite films using ozone and trimethylaluminum as sources 2 o 3 The growth process is as follows: chamber reaction temperature 70°C, trimethylaluminum source for 500ms, nitrogen purge for 20s, ozone for 500ms, nitrogen purge for 20s, repeat the above process 40 times.

[0070] 6. Preparation of hole-conducting layer

[0071] Same as Step 4 in Comparative Example 1.

[0072] 7. Prepa...

Embodiment 2

[0076] 1. Select FTO glass with a sheet resistance of 15Ω, a thickness of 2.2mm, and a transmittance of 83% as the substrate material, and then clean it with soap, acetone and ethanol.

[0077] 2. Preparation of dense ZnO layer

[0078] Use ALD technology to grow a 10nm thick ZnO layer, the deposition conditions: the reaction temperature is 200 ° C, and Zn (CH 2 CH 3 ) 2 1s, nitrogen purge for 1.5s, water flow for 500ms, nitrogen purge for 1s, repeat the above process 100 times.

[0079] 3. Barrier layer Al 2 o 3 Film preparation

[0080] Same as step 3 in Comparative Example 2.

[0081] 4. CH 3 NH 3 PB 3 Preparation of perovskite layer

[0082] Same as step 3 in Comparative Example 1.

[0083] 5. Al insulation layer 2 o 3 Film preparation

[0084] Same as step 5 in Example 1.

[0085] 6. Preparation of hole-conducting layer

[0086] Same as Step 4 in Comparative Example 1.

[0087] 7. Preparation of photocathode

[0088] Same as Step 5 in Comparative Exampl...

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Abstract

The invention relates to photovoltaic cell, in particular to a solar cell of a perovskite structure and a preparing method of the solar cell. Firstly, a titanium oxide or zinc oxide n-type compact layer is deposited on FTO conductive glass; secondly, an aluminum oxide barrier layer is deposited, then a layer of hybridized perovskite structure CH3NH3PbI3 is prepared, an aluminum oxide insulation layer is continuously deposited, and then an organic P-type layer is deposited; lastly, a metal electrode layer is deposited. The perovskite structure CH3NH3PbI3 is wrapped by the barrier layer and the insulation layer to form a sandwich protection structure, and the stability of the perovskite cell is effectively improved.

Description

technical field [0001] The invention relates to a photovoltaic cell, in particular to a solar cell with a perovskite structure and a preparation method thereof. Background technique [0002] In recent years, perovskite solar cells have developed rapidly, and their photoelectric conversion efficiency has approached 20%. Few solar technologies can reach this point so quickly. However, once this material is exposed to a humid environment or light irradiation Decomposition will occur; at present, some research groups have explored in terms of stability, such as improving the post-modification material alumina, by putting TiO 2 / CH 3 NH 3 PB 3 The substrate was immersed in a 30mM triethylaluminum / hexane solution to form a protective film of aluminum oxide on the surface of the perovskite, and then the battery was made to test its stability at a certain humidity. The results showed that: after 18 hours, the photoelectric conversion efficiency It is reduced to about half of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/44H01L51/48
CPCH10K30/00H10K30/80Y02E10/549
Inventor 袁宁一吕明航丁建宁董旭
Owner CHANGZHOU UNIV
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