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Organic solar cell doped with phosphorescent dye

A technology of solar cells and phosphorescent dyes, applied in the field of solar cells, which can solve the problems of difficulty in precise control of concentration, energy consumption, single selection of small molecule donor materials, etc.

Inactive Publication Date: 2012-07-11
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above inventions are aimed at small molecule organic solar devices or small molecule light-emitting devices. The preparation methods used are all vacuum evaporation methods, and the concentration is difficult to accurately control during the preparation process; long-term high-temperature heating and evaporation coatings also consume a lot of energy; in addition, relatively high Molecular polymer donor materials, the choice of small molecule donor materials is relatively simple

Method used

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  • Organic solar cell doped with phosphorescent dye
  • Organic solar cell doped with phosphorescent dye
  • Organic solar cell doped with phosphorescent dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Schematic diagram of the structure of phosphorescent dye-doped organic solar cells. figure 1 As shown, on a glass substrate 1 are an anode 2 , a hole transport layer 3 , a donor layer 4 , an acceptor layer 5 , and a cathode 6 in sequence. The detailed preparation process is as follows:

[0029] a) Anode 2 is ITO. First, use chloroform cotton balls to repeatedly scrub, then put the scrubbed ITO into a clean beaker, and then use acetone, lye, deionized water, and ethanol to sonicate for 10 minutes, and then blow dry with a nitrogen gun.

[0030] b) Preparation of the hole transport layer 3. PEDOT:PSS was spin-coated on the surface of ITO at a speed of 2000rpm, and then dried in a vacuum oven at 120°C for 30 minutes, with a thickness of 40nm.

[0031] c1) Configure mixed solvent: add chlorobenzene to chloroform, the volume ratio of chloroform to chlorobenzene is 100:5, the purpose is to increase the uniformity of film thickness and change the surface morphology of the fi...

Embodiment 2

[0050] Compared with Example 1, the phosphorescent dye Ir(piq) is mixed in the donor layer 4 in Example 2 2 Acac, its molecular structure is as follows:

[0051] .

[0052] The preparation process is similar to Example 1, and the structure of the prepared organic solar cell (device 3) is:

[0053] Glass / ITO(180 nm) / PEDOT:PSS(40 nm) / MEH-PPV:5wt%Ir(piq) 2 acac (25nm) / C 70 (30 nm) / Al (150 nm).

[0054] The maximum short-circuit current density of device 3 is 4.54 mA / cm 2 , the open circuit voltage is 0.46V, and the fill factor FF remains basically unchanged.

Embodiment 3

[0056] Compared with Example 1, the difference is that in the donor layer 4, the mass ratio of the polymer material to the phosphorescent dye is 100:3, and the performance of the prepared organic solar cell is:

[0057] The maximum short-circuit current density of the device is 4.56 mA / cm 2 , the open circuit voltage is 0.53V, and the fill factor FF remains unchanged.

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Abstract

The invention discloses an organic solar cell doped with phosphorescent dye, which sequentially comprises an anode, a hole transport layer, a donor layer, a receptor layer and a cathode and is characterized in that the receptor layer is made of C70 materials and the donor layer is made of macromolecule polymer materials doped with the phosphorescent dye. The donor layer is prepared via a spin-coating method, the doping ratio of the phosphorescent dye is easy to control precisely, and the maximum short-circuit current density of the prepared organic solar cell can reach 5.86mA / cm<2>.

Description

Technical field [0001] The present invention is a solar cell technology field, which involves an organic solar cell with a doping of phosphorus and light. Background technique [0002] Organic solar batteries are widely studied due to many advantages such as clean energy, low cost, simple preparation, bending, and large -scale production, and easy realization of commercialization.In the past year, the reported battery efficiency has been as high as 10%, which is close to or meets the requirements of 10%of large-scale commercialization. It is expected to be put into production in large scale within 5-10 years. In some areas, heavy silicon-based solar batteries will be replaced. [0003] The energy conversion efficiency of organic solar batteries is related to light absorption efficiency, excitement diffusion efficiency, excitement separation efficiency and charge collection efficiency.There are many methods in the experiment to improve absorption, separation efficiency, and collec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46
CPCY02E10/549
Inventor 侯林涛王平王标
Owner JINAN UNIVERSITY
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