Alloy electrode capable of improving efficiency and stability of solar cell

A technology for solar cells and alloy electrodes, applied in circuits, electrical components, photovoltaic power generation, etc., can solve the problems of reducing battery efficiency and stability, reducing battery parallel resistance, etc., to improve stability, improve energy level matching, and improve battery The effect of efficiency

Inactive Publication Date: 2015-03-25
上海纳晶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, gold and silver are used as anodes of perovskite cells and organic solar cells. Compared with aluminum atoms, gold and silver atoms are more likely to migrate to the interior of the device, which reduces the parallel resistance of the battery and reduces the efficiency and stability of the battery.
In addition, gold and silver, as precious metal materials, are widely used in price-sensitive solar cells, which will be a disadvantage in reducing battery costs

Method used

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  • Alloy electrode capable of improving efficiency and stability of solar cell
  • Alloy electrode capable of improving efficiency and stability of solar cell
  • Alloy electrode capable of improving efficiency and stability of solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 As shown, the perovskite battery structure in this embodiment includes a transparent conductive film 1, an electron transport layer 20, a perovskite light absorbing layer 3, a hole transport layer 40 and an alloy electrode 5 (anode) from bottom to top. A single specific material is given in this embodiment, which does not limit the choice of other materials, but is just an example to illustrate the present invention. The FTO conductive film 1 is ultrasonically cleaned with detergent, deionized water, isopropanol and acetone, dried, and then spin-coated with a 30nm ZnO electron transport layer 20. After annealing, then spin-coated with CH 3 NH 3 PB 3 After the perovskite photoactive layer 3 is annealed at 100°C, a Spiro-OMeTAD hole transport layer 4 is spin-coated, and then a 100nm silver-aluminum alloy electrode 5 is coated by vacuum thermal evaporation. The efficiency of perovskite cells using this structure can reach more than 12%.

Embodiment 2

[0038] Such as figure 2 As shown, the perovskite battery structure in this embodiment includes a transparent conductive film 1, a hole transport layer 40, a perovskite light absorbing layer 3, an electron transport layer 20 and an alloy electrode 5 (cathode) from bottom to top. A single specific material is given in this embodiment, which does not limit the choice of other materials, but is just an example to illustrate the present invention. ITO conductive film 1 is ultrasonically cleaned with detergent, deionized water, isopropanol and acetone, dried, and then spin-coated with a 30nm PEDOT:PSS hole transport layer (also called a hole buffer layer) at 40°C and annealed at 140°C followed by spin coating on CH 3 NH 3 PB 3 After the perovskite photoactive layer 3 is annealed at 100°C, a PC60BM electron transport layer 20 is spin-coated, and then a 100nm silver-aluminum alloy electrode 5 is coated by vacuum thermal evaporation. The efficiency of perovskite cells using this s...

Embodiment 3

[0040] Such as image 3 As shown, the organic solar cell structure in this embodiment includes a transparent conductive film 1, a hole transport layer 40, an organic light absorption layer 30, an electron transport layer 20 and an alloy electrode 5 (cathode) from bottom to top. A single specific material is given in this embodiment, which does not limit the choice of other materials, but is just an example to illustrate the present invention. ITO conductive film 1 is ultrasonically cleaned with detergent, water, isopropanol and acetone, dried, and then spin-coated with a 40nm PEDOT:PSS hole transport layer (also known as a hole buffer layer) at 40°C and annealed at 140°C. Then spin-coat the photoactive layer 30 mixed with PCE10:PC70BM (ratio 1:1.5), then spin-coat the 30nm ZnO electron transport layer 20, and then coat the 100nm silver-aluminum alloy electrode 5 by vacuum thermal evaporation. The efficiency of the organic solar cell adopting this structure can reach more than...

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Abstract

The invention belongs to the field of photoelectric devices, and discloses an alloy electrode capable of improving the efficiency and the stability of a solar cell. The alloy electrode is a binary or complex alloy electrode formed in the mode that precious metal silver is combined with metal such as aluminum, titanium, zinc, copper and/or magnesium. The invention further discloses the solar cell with the alloy electrode serving as the cathode or the anode of the cell. By means of the alloy electrode and the solar cell, matching between the energy level of the alloy electrode and the energy level of a carrier transport layer is easily improved, the contact barrier is reduced, and the efficiency of the cell is improved; silver atoms in the alloy electrode are slowly diffused to the carrier transport layer and an optical active layer, and therefore the stability of the cell can be improved; the use amount of silver materials in a unit area of the cell is decreased, the cost of the cell is easily controlled, and resources are saved.

Description

technical field [0001] The invention belongs to the field of photoelectric devices, and in particular relates to an alloy electrode capable of improving the efficiency and stability of a perovskite battery, and using the alloy electrode as a battery anode or cathode of a perovskite solar battery or an organic solar battery. Background technique [0002] Metal electrodes represented by aluminum, silver and gold usually have common optoelectronic properties such as high conductivity and high reflectivity, and are widely used in solar cells, flat-panel displays, electronic circuits, optical mirrors and other optoelectronic devices. Metal aluminum has been widely used in the field of solar cells and displays due to its low price, high reflectivity and excellent conductivity, such as organic solar cells, organic light-emitting displays and perovskite cells. Compared with silver and gold electrodes, it shows great Good cost advantage. However, aluminum has high chemical activity,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224
CPCH01L31/022425H10K30/81Y02E10/549
Inventor 陈晓红蒋紫曜陆浙林宣怀贾祥坤王晋峰孙卓
Owner 上海纳晶科技有限公司
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