A kind of photovoltaic cell based on graphene pn junction and preparation method thereof
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A photovoltaic cell and graphene technology, applied in photovoltaic power generation, circuits, electrical components, etc., can solve the problems that the chirality of carbon nanotubes cannot be precisely controlled, and it is difficult to prepare the macroscopic structure of photovoltaic performance carbon nanotubes, etc., and achieve low cost , simple operation, and promote the effect of application
Inactive Publication Date: 2011-12-21
QINGDAO UNIV OF SCI & TECH
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However, the chirality of carbon nanotubes cannot be precisely controlled at present, and it is difficult to prepare carbon nanotube macrostructures with controllable photovoltaic properties.
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Embodiment 1
[0025] Embodiment 1: a kind of preparation method of the photovoltaic cell based on graphene PN junction, operates according to the following steps:
[0026] (1) FTO glass or ITO glass is used as the substrate 1 and the transparent conductive film 2, which are respectively ultrasonically cleaned by acetone, ethanol and deionized water for 15 minutes, N 2 Blow dry for later use;
[0027] (2) Take 10mL CCl 4 Placed in a 50ml reaction kettle, 50μmL boron bromide (BBr 3 ) into CCl 4 , and add 0.5g of potassium as a catalyst, control the reaction temperature to 160°C, and the time is 2h, dissolve the resulting product in acetone, stir vigorously for 1h and then centrifuge, add the resulting product into 1L deionized water, stir vigorously for 1h and then suction filter (use 1L deionized water rinse), this process was repeated twice; after the suction filtration was finished, it was dried in a vacuum oven to obtain boron-doped graphene 3;
[0028] (3) Take 15mL of CCl 4 Place i...
Embodiment 2
[0034] Embodiment 2: a kind of preparation method of the photovoltaic cell based on graphene PN junction, operates according to the following steps:
[0035] (1) FTO glass or ITO glass is used as the substrate 1 and the transparent conductive film 2, which are respectively ultrasonically cleaned by acetone, ethanol and deionized water for 15 minutes, N 2 Blow dry for later use;
[0036] (2) Take 5mL of CCl 4 Placed in a 50ml reaction kettle, 50μmL boron bromide (BBr 3 ) into CCl 4 , and add 1g of potassium as a catalyst, control the reaction temperature to 160°C, and the time is 2h, dissolve the resulting product in acetone, stir vigorously for 1h and then centrifuge, add the resulting product to 1L deionized water, stir vigorously for 1h and then suction filter (during the period, use 1L rinse with deionized water), and this process was repeated twice. After suction filtration, dry in a vacuum oven to obtain boron-doped graphene 3;
[0037] (3) Take 5mL of CCl 4 Place i...
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Abstract
The invention relates to a photovoltaic cell based on a graphene PN junction and a preparation method thereof. The photovoltaic cell is formed by a PN junction and a counter electrode, wherein the PN junction comprise a base, a transparent conductive thin film, a P type graphene thin film and a N type graphene thin film. The preparation method comprises the following steps of: cleaning the base and the transparent conductive thin film, and blow-drying the base and the transparent conductive thin film by using N2 for standby application; respectively preparing boron doped graphene and nitrogen-doped graphene; respectively dissolving the two prepared graphene in sodium cholate hydrate to prepare a graphene solution; carrying out suction filtering on a nitrogen-doped graphene solution by using a mixed cellulose filter membrane, dropping deionized water, slowly dropwise adding a boron doped graphene solution on the surface of a nitrogen-doped graphene thin film for suction filtering and film formation, inversely arranging the obtained thin film on the surface of the spare base, compacting, distilling by adopting acetone, and soaking and cleaning by sequentially using acetone and methyl alcohol under a room temperature condition; and covering the counter electrode on the surface of the counter electrode and pressing to form the graphene PN junction photovoltaic cell. The method is simple in the preparing and assembling process, is low in cost, is suitable for large-scale application and promotes the application of the graphene in terms of the solar battery.
Description
Technical field: [0001] The invention relates to a photovoltaic cell constructed on the basis of a PN junction formed by P-type graphene and N-type graphene and a preparation method thereof, belonging to the technical field of graphene-based solar cells. Background technique: [0002] In today's society, the problem of energy crisis and environmental degradation has become increasingly prominent, and solar energy, as a clean and renewable energy source, has attracted widespread attention. Photovoltaic cells are one of the main forms of solar energy utilization, and their use is of great significance to alleviate environmental pollution caused by petrochemical energy and the energy crisis caused by its increasing depletion. Currently, silicon solar cells are widely used. However, traditional silicon solar cells have problems such as complex preparation process, high energy consumption, waste, noise, pollution, etc., which limit their further development. Therefore, finding ...
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