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ITO (indium tin oxid) nanofiber/cadmium sulfide (CdS) quantum dot solar cell and preparing method thereof

A technology of solar cells and nanofibers, applied in the field of solar cells, can solve problems such as increased cell efficiency, recombination of photogenerated electrons, and influence on cell current, and achieves the effects of improving bonding strength, simple preparation process, and low cost

Inactive Publication Date: 2015-05-06
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such structural design of quantum dot solar cells seriously affects the increase of cell efficiency and restricts the development of quantum dot solar cells. The main reasons are: (1) the use of TiO 2 Or ZnO particles as the transport layer, the transmission path of photogenerated electrons is very long, and the large transmission resistance is not conducive to the transmission of electrons
(2) TiO 2 Or there are many defects on the surface of ZnO particles, which can easily cause the recombination of photogenerated electrons, thereby affecting the increase of battery current and reducing battery efficiency.
(3) TiO 2 Or ZnO particles are used as the transport layer, that is, the skeleton attached to the quantum dots. Its small specific surface area cannot absorb more quantum dots as a sensitizer, thus limiting the improvement of its efficiency.
(3) For thin-film quantum dot solar cells, although the content of quantum dots is large, there is no good transmission path for electrons to be transported in the film, and photogenerated electrons are easily recombined by holes in the film, thus restricting the efficiency of the battery promote

Method used

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  • ITO (indium tin oxid) nanofiber/cadmium sulfide (CdS) quantum dot solar cell and preparing method thereof
  • ITO (indium tin oxid) nanofiber/cadmium sulfide (CdS) quantum dot solar cell and preparing method thereof
  • ITO (indium tin oxid) nanofiber/cadmium sulfide (CdS) quantum dot solar cell and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The FTO glass (fluorine-doped SnO 2 Conductive glass) Prepare a layer of polyvinylpyrrolidone PVP film by suspension coating method; at the same time, configure 10ml of mixed solution of water and dimethylformamide DMF according to the volume ratio of 3:1, and add 0.094g tin chloride, 0.9g indium nitrate, 0.8g of PVP, and 0.1ml of acetic acid was added, heated and stirred at 90°C for 30 minutes to configure the spinning solution. Put the spinning solution in the spinning device, place the FTO glass at the fiber collection position, set the spinning voltage to 15KV, and the spinning distance to 15cm, and spin for 10 minutes to obtain PVP nanofibers. Take out the prepared PVP nanofibers and anneal at 180°C for half an hour, then take out the nanofibers, apply 10% PEG solution evenly on the surface of the fibers, and after cooling to room temperature, anneal at 500°C for half an hour to obtain ITO nanofiber anode. The prepared ITO nanofiber anode was electrochemically de...

Embodiment 2

[0029] The FTO glass (fluorine-doped SnO 2 Conductive glass) Prepare a layer of polyvinylpyrrolidone PVP film by suspension coating method; at the same time, configure 10ml of mixed solution of water and dimethylformamide DMF according to the volume ratio of 3:1, and add 0.094g tin chloride, 0.9g indium nitrate, 0.8g of PVP, and 0.1ml of acetic acid was added, heated and stirred at 90°C for 30 minutes to configure the spinning solution. Put the spinning solution in the spinning device, place the FTO glass at the fiber collection position, set the spinning voltage to 15KV, and the spinning distance to 15cm, and spin for 20 minutes to obtain PVP nanofibers. Take out the prepared PVP nanofibers and anneal at 180°C for half an hour, then take out the nanofibers, apply 10% PEG solution evenly on the surface of the fibers, and after cooling to room temperature, anneal at 500°C for half an hour to obtain ITO nanofiber anode. The prepared ITO nanofiber anode was electrochemically de...

Embodiment 3

[0031] The FTO glass (fluorine-doped SnO 2 Conductive glass) Prepare a layer of polyvinylpyrrolidone PVP film by suspension coating method; at the same time, configure 10ml of mixed solution of water and dimethylformamide DMF according to the volume ratio of 3:1, and add 0.094g tin chloride, 0.9g indium nitrate, 0.8g of PVP, and 0.1ml of acetic acid was added, heated and stirred at 90°C for 30 minutes to configure the spinning solution. Put the spinning solution in the spinning device, place the FTO glass at the fiber collection position, set the spinning voltage to 15KV, the spinning distance to 15cm, and spin for 30 minutes to obtain PVP nanofibers. Take out the prepared PVP nanofibers and anneal at 180°C for half an hour, then take out the nanofibers, apply 10% PEG solution evenly on the surface of the fibers, and after cooling to room temperature, anneal at 500°C for half an hour to obtain ITO nanofiber anode. The prepared ITO nanofiber anode was electrochemically deposi...

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Abstract

The invention provides a quantum dot solar cell prepared from a battery structure that a continuous ITO nanofiber is taken as a transmission layer and an electro-deposition CdS quantum dot is taken as a sensitizing agent; and the continuous ITO nanofiber is processed by adopting 5% to 40% of polyethylene glycol (PEG) to improve the bonding strength of the nanofiber and a FTO (Fluorinedoped Tin Oxide) substrate, facilitate electrical transmission, reduce compound in electrical transmission, speed up light adsorption, and further improve the photoelectrical conversion efficiency of the cell; and the quantum dot solar cell has the characteristics of simple preparation process, low in preparation cost and stable preparation process.

Description

technical field [0001] The invention relates to a solar cell, in particular to a quantum dot solar cell which improves the bonding strength of indium tin oxide ITO nanofibers and a substrate cadmium sulfide FTO and a preparation method thereof. Background technique [0002] Entering the 21st century, with the continuous development and utilization of earth resources by human beings, the energy crisis and environmental pollution have become serious problems that human beings must solve and face, and a new generation of clean energy is used to replace heavily polluted oil, coal and other energy sources is an effective way. Among them, solar energy is a kind of renewable and clean energy, and it can be used sustainably, so it has broad application prospects, and the development of solar cells has attracted more and more attention. The development of solar cells has gone through three generations. The first generation: using silicon as the basic material, the conversion efficie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/20H01G9/042
Inventor 金铭俊凌涛杜希文
Owner TIANJIN UNIV
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