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h x moo 3-y nanomaterials, h x moo 3-y Electrode and solar cell comprising same and preparation method

A solar cell, hxmoo3-y technology, applied in the field of solar cells, can solve the problems of expensive work function of electrode materials, high cost and stability of solar cells, mismatch, etc., and achieves reduction of charge transfer barrier, low production cost, and electrical conductivity. Sexual effect

Active Publication Date: 2019-07-30
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0004] Therefore, in view of the above-mentioned problems that the electrode materials for solar cells are expensive and the work function does not match, the present invention aims to provide a novel H x MoO 3-y The electrode material and its preparation method, as well as the solar cell containing the electrode, on the basis of maintaining the photoelectric conversion efficiency of the cell, solve the relatively high cost and stability problems of the existing perovskite solar cell, and obtain a low-cost and high-efficiency calcium Titanium Solar Cells

Method used

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  • h <sub>x</sub> moo <sub>3-y</sub> nanomaterials, h <sub>x</sub> moo <sub>3-y</sub> Electrode and solar cell comprising same and preparation method
  • h <sub>x</sub> moo <sub>3-y</sub> nanomaterials, h <sub>x</sub> moo <sub>3-y</sub> Electrode and solar cell comprising same and preparation method
  • h <sub>x</sub> moo <sub>3-y</sub> nanomaterials, h <sub>x</sub> moo <sub>3-y</sub> Electrode and solar cell comprising same and preparation method

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preparation example Construction

[0064] The mesoporous framework layer can be prepared by mixing the material of the mesoporous framework layer such as Al 2 O 3 or ZrO 2 The solution was spin-coated on the mesoporous electron transport layer.

[0065] Then, set H x MoO 3-y The dispersion liquid is spin-coated or sprayed on the mesoporous framework layer, and heated at 40-200 ° C for 10-70 minutes to obtain H x MoO 3-y Thin film electrodes. As mentioned above, the H x MoO 3-y The dispersion can be obtained by applying the H x MoO 3-y Nanomaterials are obtained by dispersing in organic solvents. Preferably, one or more organic solvents selected from chlorobenzene, isopropanol or ethanol can be used to form the dispersion.

[0066]Finally, the solution containing the perovskite light-absorbing material can be infiltrated into the mesoporous framework layer and electrode layer and annealed. Specifically, the prepared perovskite solution can be drop-coated on H x MoO 3-y The electrode is infiltrated ...

Embodiment 1

[0072] Example 1: H x MoO 3-y Preparation of Nanomaterials

[0073] Prepare H as follows x MoO 3-y powder:

[0074] (1) 1g of molybdenum powder was added to 20mL of H 2 O 2 In the ice bath, molybdenum powder was mixed with H 2 O 2 The reaction was stirred for 2 to 4 hours.

[0075] (2) The above solution was put into the reaction kettle, and the hydrothermal reaction was carried out at 180° C. for 2d to obtain a milky white product.

[0076] (3) Wash the above milky white product with deionized water and absolute ethanol for 3 times and place it in a drying oven to dry to obtain MoO 3 White powder.

[0077] (4) Weigh 0.1g of MoO 3 White powder, 20 mL of acetic acid was added to it for 2 h, and then 2 mL of HI was added to the mixed solution for treatment for 5 d to obtain a dark green solution, which was washed with saturated sodium bicarbonate aqueous solution, deionized water, and absolute ethanol for 3 times in turn and placed in a The dark green powder is obtai...

Embodiment 2

[0078] Example 2: Preparation of perovskite solar cell SC-1

[0079] Prepared as follows figure 2 The perovskite solar cell SC-1 with the indicated device structure, as shown in Figure 2, includes a transparent conductive substrate, a hole blocking layer, a mesoporous electron transport layer, a mesoporous framework layer and an electrode layer sequentially distributed from bottom to top , the perovskite light-absorbing material is filled into the mesoporous framework layer and the electrode layer:

[0080] (1) cleaning: the FTO conductive glass substrate is placed in the ultrasonic cleaner successively with PH=8 weak alkaline liquid detergent, deionized water, dehydrated alcohol, and acetone for each cleaning for 5 minutes;

[0081] (2) Preparation of hole blocking layer: The cleaned FTO conductive glass substrate was heated at 500°C, and the prepared 0.05mol / L isopropyl titanate isopropanol solution was sprayed on the substrate and heated for 20 minutes. Form about 60nm d...

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Abstract

The present application relates to the technical field of solar cells. A novel H x MoO 3‑y Nanomaterials, H containing the nanomaterials x MoO 3‑y Thin-film electrodes, perovskite solar cells comprising the electrodes, and their preparation methods. The nanomaterial contains H x MoO 3‑y The formed nanoribbons with a diameter of 50-190 nm and a length of 0.1-20 μm can form a H x MoO 3‑y thin film electrodes. The work function of this new electrode material is more matched with the energy level of perovskite, which effectively reduces the charge transport barrier; secondly, the conductivity of this new material is better than that of carbon electrodes, which can collect charges more effectively; thirdly, with Au Compared with Ag electrodes, the production cost of this new electrode material is lower. By adopting this new H x MoO 3‑y The electrode prepares the perovskite solar cell, especially can be applied in the perovskite solar cell without the hole transport layer, and can obtain the efficient and stable perovskite solar cell.

Description

technical field [0001] The present invention relates to the technical field of solar cells. More specifically, it involves a H x MoO 3-y Nanomaterials, H x MoO 3-y Electrodes and solar cells comprising the electrodes and preparation methods thereof. Background technique [0002] A solar cell is a device that directly converts solar energy into electrical energy, and its development has gone through three stages: the first generation is a silicon-based solar cell based on crystalline silicon. Due to the high energy consumption and pollution in the manufacturing process of silicon-based solar cells, coupled with complex production processes and high production costs, they cannot yet meet the needs of large-scale applications. To this end, the second-generation compound thin-film solar cells represented by copper indium gallium selenide (CIGS) and cadmium telluride (CdTe) have been developed. Compared with the first-generation solar cells, the expected cost of the second-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCH10K71/00H10K30/10H10K30/81Y02E10/549
Inventor 王欢
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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