Photovoltaic device

一种光伏装置、光敏区域的技术，应用在光伏装置领域，能够解决钙钛矿不稳定、杂化有机-无机钙钛矿稳定性障碍等问题

Active Publication Date: 2018-02-16
OXFORD PHOTOVOLTAICS
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  • Abstract
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Problems solved by technology

However, to date, the stability of hybrid organic-inorganic perovskites has been demonstrated to be an obstacle to their potential application in commercially viable photovoltaic devices.
Specifically, although the introduction of mixed halides into hybrid perovskite compositions allows band gap tuning, these mixed halide hybrid perovskites are generally less stable than comparable single halide perovskites.

Method used

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Embodiment Construction

[0067] definition

[0068] The term "photosensitive" as used herein refers to a region, layer or material capable of photoelectrically responding to light. A photosensitive region, layer or material is thus capable of absorbing energy carried by photons of light, which subsequently leads to the generation of electricity (for example by generating electron-hole pairs or excitons).

[0069] The term "perovskite" as used herein refers to a 3 A material with a structurally related three-dimensional crystal structure or a material comprising a layer of material having a compound with CaTiO 3 The structure of the related structure. CaTiO 3 The structure of can be given by the formula ABX 3 where A and B are cations of different sizes, and X is an anion. In the unit cell, the A cation is at (0, 0, 0), the B cation is at (1 / 2, 1 / 2, 1 / 2), and the X anion is at (1 / 2, 1 / 2, 0) place. A cations are generally larger than B cations. The skilled artisan will understand that as A, B an...

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Abstract

There is provided a photovoltaic device that comprises a photoactive region, the photoactive region comprising a perovskite material of general formula A1-xA'xBX3-yX'y wherein A is a formamidinium cation(HC(NH)2)2 +), A' is a caesium cation (Cs+)B is at least one divalent inorganic cation, X is iodide and X' is bromide, and x is greater than 0 and equal to or less than 0.4and y is greater than 0 and less than or equal to 3. There is also provided a method of producing a photovoltaic device comprising a photoactive region comprising the perovskite material, and formulations for use in the formation of the perovskite material.

Description

technical field [0001] The present invention relates to a photovoltaic device comprising a perovskite material having a bandgap and improved stability making it suitable for use in a multijunction photovoltaic device, and methods and formulations for the manufacture of such a photovoltaic device. Background technique [0002] Over the past forty years or so, there has been growing recognition of the need to replace fossil fuels with safer sustainable energy sources. New energy supplies must also have low environmental impact, be highly efficient and be easy to use and inexpensive to produce. To this end, solar energy is considered one of the most promising technologies, however, the high cost of manufacturing devices that capture solar energy, including high material costs, has historically hindered its widespread use. [0003] Each solid has its own characteristic band structure that determines a wide range of electrical properties. Electrons are able to transition from o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48H01L27/30H01L51/44
CPCC07C257/12H10K71/12H10K85/00H10K30/10Y02E10/549Y02E10/544Y02P70/50H10K30/57H10K30/151H10K30/20H10K30/87H10K85/50H01L2031/0344C09K11/665H10K30/82C01P2002/34H01L31/036H01L31/0687H01L31/0725
Inventor B·A·卡米诺L·M·佩雷斯
Owner OXFORD PHOTOVOLTAICS
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