Inverted organic solar cell adopting phthalocyanine derivative film as cathode buffer layer and preparation method thereof

A cathode buffer layer and solar cell technology, applied in the field of solar cells, can solve the problems of unsuitability for commercialization, environmental pollution, high toxicity of organic solar cell materials, etc., and achieves improvement of overall efficiency, good alcohol solubility, and improvement of incident photoelectron conversion efficiency. Effect

Active Publication Date: 2017-06-09
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, on the one hand, the stability of solar cell devices still needs to be further improved. On the other hand, organic solar cell materials are highly toxic, pollute the environment seriously, and are not suitable for commercialization. This runs counter to the current national policy of our country.

Method used

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  • Inverted organic solar cell adopting phthalocyanine derivative film as cathode buffer layer and preparation method thereof
  • Inverted organic solar cell adopting phthalocyanine derivative film as cathode buffer layer and preparation method thereof
  • Inverted organic solar cell adopting phthalocyanine derivative film as cathode buffer layer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The etched and cleaned ITO conductive glass was sonicated twice for 15 min with washing solution, deionized water, acetone, and ethanol in turn. Connect P3HT and PC 61 BM was dissolved in dichlorobenzene solution at a mass ratio of 1:1 to prepare a solution with a concentration of 17 mg / ml. The mixed solution was uniformly stirred at a temperature of 60 ° C for 12 hours and was set aside. ZnPc(OC 8 H 17 OPyCH 3 i) 8 The material was dissolved in ethanol solvent (concentration 0.8 mg / ml). Dry the cleaned ITO conductive glass with nitrogen and UV for 15min. Then spin-coated ZnPc(OC 8 H 17 OPyCH 3 i) 8 solution. The process is to first rotate at a low speed of 700r / min for 10s, and then rotate at a high speed of 3000r / min for 60s to form a cathode buffer layer. Then, the evaporated substrate was transferred to a high-quality hand-operated box filled with N2, and the mixed solution of P3HT:PCBM was spin-coated on the cathode buffer layer at 800 rpm for 60 s, and ...

Embodiment 2

[0039] The inverted organic solar cell was prepared by the same method as in Example 1. The difference from Example 1 is that ZnPc(OC) was spin-coated on ITO in this example. 8 H 17 OPyCH 3 i) 8 after the solution. The substrate was placed in an environment full of ethanol vapor and annealed for 20 min to form a cathode buffer layer. obtained as ZnPc(OC 8 H 17 OPyCH 3 i) 8 High stability inverted organic solar cells as cathode buffer layer. Its device structure see figure 1 , at room temperature, the J-V curve of the device was measured. from figure 2 The effect of solvent vapor annealing on the performance of organic solar cells can be seen. Compared with the unannealed device, the performance of the device after ethanol vapor treatment is significantly improved, and the device performance reaches PCE 3.76%, Voc 0.579V, Jsc 10.71mA / cm 2 , FF 0.61. from image 3 It can be seen that the spectral response wavelength range of the device after solvent annealing is s...

Embodiment 3

[0041] The inverted organic solar cell was prepared by the same method as in Example 1. The difference from Example 1 is that ZnPc(OC) was spin-coated on ITO in this example. 8 H 17 OPyCH 3 i) 8 after the solution. The substrate was placed in the small transition chamber of the Braun glove box, and the device was annealed by the flow of inert gas circulating in the small transition chamber for 20 min in the transition chamber to form a cathode buffer layer. obtained as ZnPc(OC 8 H 17 OPyCH 3 i) 8 High stability inverted organic solar cells as cathode buffer layer. At room temperature, the J-V curve of the device was measured (see figure 2 ). from figure 2 It can be seen that the effect of air flow annealing in the transition chamber on the performance of organic solar cells. Compared with the unannealed device, the performance of the device after the excessive chamber air flow annealing treatment is significantly improved, and the device performance reaches PCE3.69...

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Abstract

The invention relates to an inverted organic solar cell adopting a phthalocyanine derivative film as a cathode buffer layer and the preparation method thereof. Crystallization order degree of phthalocyanine derivatives used as buffer layer materials is effectively controlled by solvent steam annealing processing or transfer chamber airflow annealing processing, and roughness of a film surface is reduced, and then the synthetic method of the ionic phthalocyanine derivatives ZnPc(OC8H17OPyCH3I) is simple, and ethanol soluble performance is good, and therefore an environmental-friendly non-toxic harmless ideal cathode interface material is provided. The inverted structural device provided by the invention does not contain acidic hole transfer material PEDOT:PSS and a low power function metal electrode, and therefore the efficiency and the stability of the device are improved obviously. Compared with the prior art, the preparation method is novel, preparation technology is simple, and costs are low, and therefore the effective method of improving the performance of the solar cell is provided. The 80% efficiency of the prepared organic solar cell device is maintained after 500hours, and therefore the efficiency is higher than that of conventional devices.

Description

technical field [0001] The invention relates to an inverted structure organic solar cell, in particular to a phthalocyanine derivative ZnPc(OC 8 H 17 OPyCH 3 i) 8 The invention relates to an inverted organic solar cell with a thin film as a cathode buffer layer and a preparation method thereof, belonging to the technical field of solar cells. Background technique [0002] Under the premise of the great development of the world economy, the problem of energy shortage and environmental pollution has become the bottleneck of the sustainable development of the world economy. Solar energy has attracted widespread attention due to its advantages of non-polluting, large reserves, renewable, wide distribution, and easy collection. It is an ideal candidate for people to solve the energy crisis and environmental pollution, and plays a pivotal role in the global energy strategy. [0003] Polymer solar cells have attracted widespread attention in the industry due to their diverse ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/441H10K71/40H10K85/215H10K85/113H10K85/311H10K30/30Y02E10/549Y02P70/50
Inventor 张宏梅郑爽
Owner NANJING UNIV OF POSTS & TELECOMM
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