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Hot carrier solar cell and photovoltaic module

A technology of solar cells and hot carriers, which is applied in the direction of electrical components, electric solid devices, circuits, etc., can solve the problems of less sunlight absorption and limited hot carrier efficiency improvement of solar cells

Active Publication Date: 2022-07-15
LONGI GREEN ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the thinner light-absorbing layer absorbs less sunlight, which limits the efficiency improvement of hot-carrier solar cells

Method used

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  • Hot carrier solar cell and photovoltaic module
  • Hot carrier solar cell and photovoltaic module

Examples

Experimental program
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Effect test

Embodiment 1

[0071] In this embodiment, the hot carrier solar cell includes a substrate, a first electrode, a first hot carrier transport layer, a light absorption layer, a second hot carrier transport layer, and a second electrode.

[0072] In this embodiment, sunlight is incident from the substrate side. The substrate is glass. The first electrode is made of FTO material, in which H 1 =500nm, H 2 =500nm, W=200nm, D=2000nm. The first hot carrier transport layer transports hot electrons, which adopts Bphen material and has a thickness of 100 nm. The light absorbing layer is FAPbI 3 The light absorption layer composed of perovskite quantum dots has a thickness of 200 nm, and the size of the quantum dots constituting the light absorption layer is 6 nm. The second hot carrier transport layer transports hot holes, adopts CBP material, and has a thickness of 100 nm. The second electrode is made of Au material, where H 1 =500nm, H 2 =500nm, W=200nm, D=2000nm. The second electrodes are a...

Embodiment 2

[0074] In this embodiment, the hot carrier solar cell includes a substrate, a first electrode, a first hot carrier transport layer, a light absorption layer, a second hot carrier transport layer, and a second electrode.

[0075] In this embodiment, sunlight is incident from the second electrode side. The substrate is glass. The first electrode is made of Ag material, in which H 1 =300nm, H 2 =600nm, W=100nm, D=1800nm. The first hot carrier transport layer transports hot electrons, which adopts TPBi material and has a thickness of 50 nm. The light absorbing layer is FAPbI 3 The light absorption layer composed of perovskite quantum dots has a thickness of 200 nm, and the size of the quantum dots constituting the light absorption layer is 6 nm. The second hot carrier transport layer transports hot holes and adopts F8 material with a thickness of 60 nm. The second electrode is made of ITO material, in which H 1 =300nm, H 2 =600nm, W=100nm, D=1800nm. The second electrodes ...

Embodiment 3

[0077] In this embodiment, the hot carrier solar cell includes a substrate, a first electrode, a first hot carrier transport layer, a light absorption layer, a second hot carrier transport layer, and a second electrode.

[0078] In this embodiment, sunlight is incident from the second electrode side. The substrate is an aluminum substrate, and the arrangement of the remaining layers is the same as that of the second embodiment. The aluminum substrate can be used as a flat electrode, and together with the first electrode, the thermal electrons can be extracted.

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Abstract

The invention discloses a hot carrier solar cell and a photovoltaic module, relates to the technical field of photovoltaics, and aims to improve sunlight absorption of a light absorption layer. The cell comprises a substrate, and a first electrode, a first hot carrier transmission layer, a light absorption layer, a second hot carrier transmission layer and a second electrode which are formed on the substrate. The light absorbing layer has a three-dimensional structure. The first electrode comprises a conductive layer and at least one conductive bulge formed on the conductive layer, the conductive bulge extends into the first hot carrier transmission layer, and / or the second electrode comprises a conductive layer and at least one conductive bulge formed on the conductive layer, and the conductive bulge extends into the second hot carrier transmission layer; the three-dimensional structure of the light absorption layer has a first height in the direction perpendicular to the substrate, and the conductive protrusions are at least partially located within the range of the first height. The hot carrier solar cell and the photovoltaic module provided by the invention are used for manufacturing the hot carrier photovoltaic module.

Description

technical field [0001] The invention relates to the field of photovoltaic technology, in particular to a hot carrier solar cell and a photovoltaic assembly. Background technique [0002] Hot carrier solar cells collect the hot carriers excited by sunlight before relaxation, so as to obtain higher energy conversion efficiency. In order to realize the collection of hot carriers, the thickness of the light absorption layer of the hot carrier solar cell usually does not exceed the diffusion length of the hot carriers. [0003] However, thinner light-absorbing layers absorb less sunlight, which limits the efficiency improvement of hot-carrier solar cells. SUMMARY OF THE INVENTION [0004] The purpose of the present invention is to provide a hot carrier solar cell and a photovoltaic assembly, so as to improve the absorption of sunlight by the light absorption layer. [0005] In a first aspect, the present invention provides a hot carrier solar cell. The hot carrier solar cell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224H01L31/055H01L51/44
CPCH01L31/022433H01L31/055H10K30/81H10K30/87Y02E10/549
Inventor 解俊杰徐琛李子峰吴兆靳金玲
Owner LONGI GREEN ENERGY TECH CO LTD
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