Organic/inorganic hybrid solar cell and preparation method thereof

A solar cell, hybrid technology, applied in the fields of nanomaterials and energy, to achieve the effects of increasing open circuit voltage, performance, and short circuit current

Inactive Publication Date: 2012-04-11
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, hybrid solar cells composed of ZnO-CdS heterogeneous core-shell nanorods or wire arrays and polymers have not been reported yet.

Method used

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  • Organic/inorganic hybrid solar cell and preparation method thereof
  • Organic/inorganic hybrid solar cell and preparation method thereof
  • Organic/inorganic hybrid solar cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: Preparation of ZnO nanorod arrays.

[0036] (1-1) Preparation of ZnO dense film:

[0037] First, etch the ITO on the ITO conductive glass (ITO thickness is 100-120nm, ≤15Ω / □) to 12×4mm with concentrated hydrochloric acid and Zn powder 2 Thin strips; ultrasonically cleaned with acetone, isopropanol, and ultrapure water, and dried with dry nitrogen before use.

[0038] 0.16 g of zinc acetate [Zn(CH 3 COO) 2 2H 2 O] was dissolved in 1 g of water, and after complete dissolution, 4 ml of absolute ethanol was added, and then 100 μl of glacial acetic acid was added dropwise; the mixture was stirred at room temperature for 2 hours to obtain a colorless, clear and transparent solution. The above solution was spin-coated on ITO glass (2000 rpm, 60 seconds), and repeated four times to obtain a uniform film. Then, the zinc acetate film was aged in a container with a relative humidity of 52% (at room temperature) for 24 hours, and then calcined in a muffle furnace at...

Embodiment 2

[0043] Example 2: Preparation of ZnO-CdS heterogeneous core-shell nanorod arrays.

[0044] (2-1) Preparation of ZnO nanorod array: Same as Example 1.

[0045] (2-2) Preparation of ZnO-CdS heterogeneous core-shell nanorod arrays:

[0046] At room temperature, ZnO nanorod arrays were prepared at a concentration of 10 × 10 -3 mol / L of Cd(NO 3 ) 2 After soaking in the aqueous solution for 30 seconds, rinse with water for 30 seconds to remove a large amount of Cd(NO 3 ) 2 solution; then, this ZnO nanorod array was immediately placed in a 10×10 -3 mol / L Na 2 Soak in S aqueous solution for 30 seconds, and rinse with water for 30 seconds to remove unreacted Na 2 S solution; a SILAR process has been completed so far. The thickness of the CdS layer is controlled by the number (n) of SILAR processes. After repeating the SILAR process for n=30 and 50 times, a ZnO-CdS heterogeneous core-shell structure nanorod array (ie, ZnO-CdS-NA) was obtained.

[0047] (2-3) Characterization o...

Embodiment 3

[0049] Example 3: Preparation of polymer / heterogeneous core-shell nanorod array solar cells.

[0050] (3-1) Preparation of ZnO nanorod array: Same as Example 1.

[0051] (3-2) Preparation of ZnO-CdS heterogeneous core-shell structure nanorod array: same as Example 2.

[0052] (3-3) Preparation of MEH-PPV / ZnO-CdS-NA solar cells:

[0053] Using freshly distilled chlorobenzene as a solvent, prepare a MEH-PPV solution with a concentration of 10 mg / mL and stir it at room temperature for 24 hours. 100 microliters of MEH-PPV solution was uniformly dispersed on the ZnO-CdS-NA (n=30 or 50) layer, and then spin-coated (1500 rpm, 60 seconds) to deposit the polymer onto the ZnO-CdS-NA Above; after vacuum drying at 60°C for 12 hours to remove the solvent chlorobenzene, heat treatment at 150°C for 15 minutes in a nitrogen-protected glove box to allow the polymer to fully penetrate between the nanorods, and the polymer layer above the nanorods The thickness is 30-80nm.

[0054] Then, on th...

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Abstract

The invention discloses an organic/inorganic hybrid solar cell and a preparation method thereof. A ZnO nanorod array which is vertically grown on an ITO substrate is taken as a template, and a ZnO-CdS heterogeneous core shell structure nanorod array with a core of ZnO and a shell of CdS is prepared. Through compounding a polymer and the ZnO-CdS heterogeneous core shell structure nanorod array, a solar cell with an anode of ITO and a cathode of an Au film is prepared. When thickness of the CdS shell is about 6 nm, cell performance is best, open-circuit voltage reaches 0.89 V, short circuit current is 2.83 mA/cm<2>, and conversion efficiency reaches 0.74%. Compared with a pure ZnO nanorod array cell, open-circuit voltage of a ZnO-CdS array cell is raised by 170%, short circuit current of the ZnO-CdS array cell is increased by 146%, and conversion efficiency of the ZnO-CdS array cell is raised by 517%.

Description

Technical field: [0001] The invention relates to the fields of nanomaterials and energy, and specifically relates to an organic / inorganic hybrid solar cell and a preparation method thereof. Background technique: [0002] The hybrid polymer solar cell composed of organic conjugated polymer and inorganic semiconductor nanostructure is a new type of organic / inorganic hybrid solar cell. Due to its advantages of both polymers (light weight, good flexibility, easy large-area and low-cost film formation, etc.) An important research object in valence solar cells. Usually, inorganic semiconductor nanoparticles are mixed with organic polymers in an organic solvent to achieve simple blending, and then these simple blends are made into disordered organic / inorganic hybrid batteries in an appropriate way; for example, organic polymers and ZnO (J. Phys. Chem. B 2005, 109, 9505-9516; Adv. Funct. Mater. 2006, 16, 1112-1116), TiO 2 (Appl.Phys.Lett.2007, 90, 183513), PbS (Nanotechnology 200...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/44H01L51/48
CPCY02E10/549
Inventor 崔奇王命泰沈薇
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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