CN203521181U

CN203521181U - Mesh dye sensitization solar cell

Info

Publication number: CN203521181U
Application number: CN201320647927.5U
Authority: CN
Inventors: 徐春花; 王镜喆; 尤玉飞; 王俊鹏; 张梦兰; 李香利; 徐申生; 曹津; 王涛然; 侯寒停; 程博文; 韩林格
Original assignee: Henan University of Science and Technology
Current assignee: Henan University of Science and Technology
Priority date: 2013-10-21
Filing date: 2013-10-21
Publication date: 2014-04-02
Anticipated expiration: 2023-10-21

Abstract

The utility model relates to a mesh dye sensitization solar cell. The mesh dye sensitization solar cell comprises a light anode and a cathode arranged in a chamber, wherein I-/I3-type electrolyte is filled in the chamber, the light anode is a mesh structure, a titanium dioxide nano particle layer is absorbed by the light anode, and sensitization dye is absorbed by the titanium dioxide nano particle layer. According to the mesh dye sensitization solar cell, the conductive glass is taken as the cathode, a metal platinum layer is plated on a conductive face, mirror processing on a non-conductive face is carried out, the light anode is made to be the mesh structure, so not only can areas of opposite surfaces of the light anode and the cathode be improved, a surface area for light irradiation reception is improved, light which enters the cell and is reflected can re-irradiate on the light anode through secondary mirror reflection of the conductive glass, and thereby a utilization rate of light is improved, and a photoelectric conversion rate is greatly improved.

Description

A kind of netted DSSC

Technical field

The utility model relates to area of solar cell, specifically a kind of netted DSSC.

Background technology

TiO ₂be a kind of wide bandgap semiconductor, energy gap is 3.2ev, having important effect aspect enhancing electricity conversion, aspect electronics, photoelectric conversion, has very high researching value.Nano-TiO ₂as a kind of green functional material, there are some special character, as N type semiconductor, chemistry and mechanical stability, photocatalytic, biologically active and low preparation cost have become one of the study hotspot in this field, aspect DSSC, photocatalytic device and sensor, having a wide range of applications.

Existing DSSC generally adopts negative electrode and light anode to be oppositely arranged, be full of electrolyte between the two, the solar cell of this structure, light anode and electrolytical contact area are little, cause the photoelectric conversion rate of solar cell of this type very low.

Utility model content

For solving the low problem of existing DSSC optoelectronic transformation efficiency, the utility model provides a kind of netted DSSC, by the improvement to light Anode and battery structure, greatly increase light anode and electrolytical contact area, thereby increased substantially photoelectric conversion rate.

The utility model is that the technical scheme that solves the problems of the technologies described above employing is: a kind of netted DSSC, comprise the light anode and the negative electrode that are oppositely arranged in cavity, and in cavity, be full of I ^-/ I ^3-type electrolyte, described smooth anode is network structure, is attached with titania nanoparticles layer on the net, on titania nanoparticles layer, absorption has sensitizing dyestuff.

Described negative electrode is electro-conductive glass, is coated with metal platinum layer on the conducting surface of electro-conductive glass, is coated with aluminium lamination or silver layer on nonconductive surface.

The material of described smooth anode is stainless steel, titanium, zinc or brass.

In the utility model, described network structure light anode can be that individual layer network structure or multilayer network structure are formed by stacking, and still, when multilayer network structure superposes, the mesh of adjacent layer can not overlap.

Sensitizing dyestuff described in the utility model can be a kind of sensitizing dyestuff, can be also two kinds, and sensitizing dyestuff is not of the same race is mainly in order to respond the visible ray of different wave length, expansion photoresponse scope, and sensitizing dyestuff has N719, N3, GD3, Z907 etc.

In the utility model, on the conducting surface of electro-conductive glass, on plating platinum layer and nonconductive surface, be coated with aluminium lamination or silver layer (doing mirror process), its object has two: one, utilize the catalytic action of platinum, increased the transmission rate of electronics, thereby raising photoelectric conversion efficiency, its two, thereby by the unnecessary light injecting from light anode one side by mirror-reflection to improving light utilization light anode.

Beneficial effect: the utility model compared with prior art has the following advantages:

1) using electro-conductive glass as negative electrode, and plating is established metal platinum layer and nonconductive surface aluminium coated or silver layer and is done mirror process on its conducting surface, can will inject in battery like this but the light being reflected is irradiated on light anode after by electro-conductive glass secondary reflection again, thereby improve the utilance of light;

2) by light anode, be set to network structure, increased the surface area of the titania nanoparticles adhering on it, thereby all increase with the amount of electrolytical contact area and absorption sensitizing dyestuff, and then increased substantially photoelectric conversion efficiency.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is a kind of network structure schematic diagram of the utility model light anode;

Reference numeral: 1, cavity, 2, negative electrode, 3, titania nanoparticles layer, 4, light anode, 5, sensitizing dyestuff, 6, electrolyte, 7, nonconductive surface.

Embodiment

As shown in the figure, a kind of netted DSSC, comprises the light anode 4 and the negative electrode 2 that are oppositely arranged in cavity 1, the interior injection of cavity 1 I ^-/ I ^3-type electrolyte 6, described smooth anode 4 is network structure, is attached with titania nanoparticles layer 3 on light anode 4, on titania nanoparticles layer 3, absorption has sensitizing dyestuff 5.

Be more than basic embodiment of the present utility model, can on above basis, do further improvement or restriction:

As, described negative electrode 2 is electro-conductive glass, is coated with metal platinum layer and nonconductive surface silver coating or aluminium lamination and does mirror process, to improve the utilance of light and the transmission rate of increase electronics on the conducting surface of electro-conductive glass; Described negative electrode 2 preferably arranges as a sidewall of cavity 1, thereby or the shape of negative electrode 2 be set to the sidewall that annular forms cavity 1, light anode 4 is arranged on the center of negative electrode 2;

As, the mesh of described cancellated smooth anode 4 is shaped as rhombus, and mesh shape can be also other shape certainly, as shapes such as circle, polygons;

As, the material of described smooth anode 4 is stainless steel, titanium, zinc or brass, and preferred material is titanium, and the thickness of network diaphragm anode 4 is 50 microns, can make it have good pliability like this so that be made into flexible solar cell, of many uses easy to carry.

In the utility model, when light is irradiated to the sensitizing dyestuff 5 on light anode 4, sensitizing dyestuff molecular transition is to excitation state, and the dye molecule in excitation state arrives TiO by electronic injection ₂in semi-conductive conduction band, in rear inflow external circuit, the dyestuff in oxidation state is reduced the I of state ^-/ I ^3-type electrolyte reducing/regenerating, the electrolyte of oxidation state is reduced after electrode is accepted to electronics, thereby completes a circulation.

Claims

1. a netted DSSC, comprises the light anode (4) and the negative electrode (2) that are oppositely arranged in cavity (1), is full of I in cavity (1) ^-/ I ^3-type electrolyte (6), is characterized in that: described smooth anode (4) is network structure, is attached with titania nanoparticles layer (3) on light anode (4), and the upper absorption of titania nanoparticles layer (3) has sensitizing dyestuff (5).

2. a kind of netted DSSC according to claim 1, is characterized in that: described negative electrode (2) be shaped as annular, light anode (4) is arranged on the center of negative electrode (2).

3. a kind of netted DSSC according to claim 1, is characterized in that: described negative electrode (2) is electro-conductive glass, is coated with metal platinum layer on the conducting surface of electro-conductive glass, and nonconductive surface is coated with aluminium lamination or silver layer on (7).

4. a kind of netted DSSC according to claim 1, is characterized in that: the material of described smooth anode (4) is stainless steel, titanium, zinc or brass.