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Tandem solar cell and manufacturing method thereof

A solar cell and stacking technology, applied in the field of solar cells, can solve problems such as material mismatch

Inactive Publication Date: 2016-10-12
SUZHOU GCLSI SCI & TECH IND APPL RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on this, it is necessary to provide a material-matched tandem solar cell for the problem of material mismatch in existing tandem solar cells

Method used

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  • Tandem solar cell and manufacturing method thereof

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0035] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only and are not intended to represent the only embodiments.

[0036] Unless otherwise defined, all technical and scientific terms u...

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Abstract

The invention relates to the field of solar cells, and particularly discloses a tandem solar cell, which comprises a top cell unit of a perovskite cell, a bottom cell unit of a silicon cell and a middle layer located between the top cell unit and the bottom cell unit. The chemical formula for the perovskite material in the perovskite cell is: [(NH2CHNH2)1-a(CH3NH3)a]Pb[I1-xBrx]3 or [(NH2CHNH2)1-bCsb]Pb[I1-xBrx]3, and 0.3< / =x< / =0.5, 0.3< / =a< / =0.5 and 0.1< / =b< / =0.5. According to the above tandem solar cell, band gaps of the top perovskite cell and the bottom silicon cell are matched, the problem of current matching between top and bottom cells can be well solved, and the cell efficiency can be improved. The invention also discloses a method of manufacturing the tandem solar cell.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to a stacked solar cell and a preparation method thereof. Background technique [0002] The energy distribution of the solar spectrum is broad, and a semiconductor material can only absorb photons with energies higher than its energy gap value. The photons with lower energy in sunlight will pass through the battery and cannot be used; the excess energy of high-energy photons exceeding the energy gap width will be transferred to the lattice atoms of the battery material itself through the energy pyrolysis of photogenerated carriers to make the material itself fever. None of these energies can be transferred to the load through photogenerated carriers and become effective electrical energy. Therefore, the theoretical conversion efficiency of single-junction solar cells is generally low. [0003] As a result, stacked solar cells have emerged, which are generally composed of three parts: a...

Claims

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Application Information

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IPC IPC(8): H01L51/46H01L51/48
CPCH10K85/60H10K30/10H10K30/00Y02E10/549
Inventor 杨黎飞张闻斌王琪
Owner SUZHOU GCLSI SCI & TECH IND APPL RES INST CO LTD
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