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All-inorganic composite hole transport layer with energy level gradient and battery, and preparation methods thereof

A hole transport layer, inorganic composite technology, used in circuits, photovoltaic power generation, electrical components and other directions, can solve the problems of increased probability of interface non-radiative composite, increased interface energy loss, weak built-in electric field strength, etc., to promote the charge The effect of transmission, improving stability, and energy saving in the preparation process

Active Publication Date: 2021-04-06
HUANENG NEW ENERGY CO LTD +1
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Problems solved by technology

Although NiOx exhibits the properties of P-type semiconductors, its multi-sub (hole) concentration is relatively low, and the Fermi level is far away from the VBM, resulting in weak built-in electric field strength, increased interface non-radiative recombination probability, and interface energy loss. Increase

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  • All-inorganic composite hole transport layer with energy level gradient and battery, and preparation methods thereof
  • All-inorganic composite hole transport layer with energy level gradient and battery, and preparation methods thereof

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Embodiment Construction

[0029]When describing an embodiment of the invention, a specific term is used for clarity. However, the invention is unintentionally limited to the selected specific term. It should be understood that each particular component includes a similar method to achieve all of the technical equivalents of similar purposes.

[0030]The present invention is inserted between the ITO transparent electrode (transparent electrode substrate 101) and the NiOx hole transport layer (second charge transport layer 103) V.2O5, Build a full-inorganic composite hole transport layer V2O5 / NIOXNIOXTop 5.2 EV, V2O5The top 5.0ev is 5.0ev, due to the existence of the energy level gradient of the two-layer price, will be in V2O5 / NIOXThe interface forms an internal electric field, due to the existence of electric field driving force, promotes the charge transfer process at the interface, which in turn reduces carrier non-radiative composite.

[0031]Specifically, the present invention is spinned to the transparent e...

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Abstract

The invention discloses an all-inorganic composite hole transport layer with an energy level gradient and a battery, and preparation methods thereof. A layer of P-type inorganic material V2O5 is inserted between an ITO transparent electrode and a NiOx hole transport layer to construct an all-inorganic composite hole transport layer V2O5 / NiOX, and the energy level gradient is formed in the composite hole transport layer structure to enhance a built-in electric field, promote carrier transport, and reduce the non-radiative recombination probability of interface carriers.

Description

Technical field[0001]The present invention belongs to the field of photoelectric conversion devices, relates to thin film solar cells (perovskite solar cells, dye-sensitized solar cells, etc.) charge transport materials, specifically, a full-inorganic composite hole transport layer, battery and preparation of energy-stage gradient. method.Background technique[0002]Perovskite solar cells have a rapid increase in photoelectric conversion efficiency of N-I-P structural devices to 25.5% in terms of 3.8%, and become a leader in PV field. However, the photoelectric conversion efficiency of the P-I-N structural device is still lag. The inorganic cavity transmission material used by the P-I-N structural device is NiOx, which has a good stability and the band structure matches the perovskite material. Although NiOx exhibits the nature of the P-type semiconductor, its polymiator (hole) concentration is relatively low, the Fermi level is far from VBM, resulting in a weak internal electric fiel...

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Application Information

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IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/16H10K30/15Y02E10/549Y02P70/50
Inventor 王百月赵志国秦校军赵东明肖平董超熊继光刘家梁刘娜冯笑丹梁思超王森
Owner HUANENG NEW ENERGY CO LTD
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