TWM563664U - Structure and method of flexible polymer solar cell capable of improving photoelectric conversion efficiency - Google Patents

Abstract

This creation is to provide a structure of a flexible polymer solar cell that can improve the photoelectric conversion efficiency. The main reason is that the volume ratio of the (PEDOT: PSS) and the (MoO ₃ ) is 1: 3; the (P3HT), (PCPDTBT) And the weight ratio of (PC61BM) is 1: 0.04: 1; by this creation, molybdenum trioxide was mixed in a 1: 3 volume ratio as a hole transport layer, and its PCE was increased from 1.97% to 3.11%, an increase of 58%. JSC increased from 8.57mA / cm ² to 9.61mA / cm ^2, to enhance the 12% fill factor increased from 0.44 to 0.61, with the addition of the active layer can foster PCPDTBT absorbs infrared light, the open-circuit voltage and therefore significantly improved, but also Those who have improved the overall photoelectric conversion efficiency.

Description

Structure of flexible polymer solar cell capable of improving photoelectric conversion efficiency

This creation relates to the structure of a soft polymer solar cell that can improve the photoelectric conversion efficiency, especially a kind of especially having a higher carrier mobility and relatively chemical and physical stability, so as to improve the photoelectric conversion efficiency of the solar cell Structurer.

According to the first generation of traditional solar cells, silicon crystal inorganic solar cells have the disadvantage that the coefficient of light absorption of silicon itself is relatively low, which results in the battery being slightly thicker and more materials. The process of preparing silicon requires smelting and consumes a lot of energy. Processing in a vacuum makes it expensive to manufacture. Therefore, there are doubts about high energy consumption and high pollution in the manufacturing process of inorganic solar cells. Compared with the above-mentioned inorganic solar cells, which are expensive and difficult to popularize, organic solar cells have considerable advantages to replace inorganic solar cells. The development potential of polymer organic solar cells is amazing, especially in terms of low production costs and flexibility. Under the advantages of light weight, light weight, and simple process, I believe that it can be used to improve human life in the future. At present, the photoelectric conversion efficiency value of polymer organic solar cells is still not comparable to that of inorganic solar cells. However, after the efforts of many scholars, we can find that the optical conversion efficiency of polymer organic solar cells is slowly improving. Methods include: synthesizing low energy gap materials to increase light absorption, using tandem cells, different process conditions, etc. When the material enters the nanometer scale, the characteristics of the material will be different according to its size. Its optical, electrical, magnetic, thermal and mechanical properties are more obvious than the bulk phase. Not the same, inorganic nanomaterials have higher carrier mobility and can improve light absorption and have better chemical and physical stability. Using inorganic nanomaterials can retain the original element characteristics and also possess inorganic nanomaterials. The characteristics of rice materials, so the application of inorganic nano materials in polymer organic solar cells is also a major trend.

Therefore, in view of the problems of the above-mentioned inorganic solar cells, how to develop an innovative structure with more ideal and practicality, which is actually used by consumers, is also a must for related industries. R & D breakthrough goals and directions. In view of this, the creators have been engaged in the manufacturing development and design of related products for many years. In view of the above-mentioned goals, after detailed design and careful evaluation, the author can finally have a practical original creation.

That is, the main purpose of this creation is to provide a structure of a flexible polymer solar cell that can improve the photoelectric conversion efficiency; the problem it wants to solve is to address the need for smelting and consuming a lot of energy in the manufacturing process of conventional inorganic solar cells. It must also be processed in a vacuum to improve the manufacturing cost of the problem of high manufacturing costs. The technical characteristics of the problem are mainly including: an anode layer (ITO PET), which is an ITO soft layer. Made of plastic glass material; a hole transport layer (PEDOT: PSS: MoO ₃ ) is arranged on the end face of the anode layer, and the hole transport layer contains a plurality of poly (3,4-dioxyethylene thiophenes) ) -Polystyrene sulfonic acid (PEDOT: PSS) and a plurality of molybdenum trioxide (MoO ₃ ); wherein the plurality of poly (3,4-dioxyethylene thiophene) -polystyrene sulfonic acid (PEDOT: PSS ) And the volume ratio of the plurality of molybdenum trioxide (MoO ₃ ) is 1: 3; an active layer (P3HT: PCPDTBT: PC61BM) is disposed on the upper end surface of the hole transmission layer, and the active layer includes Poly (3-hexylthiophene), P3HT (p-type material) polymer semiconductor, A mixture of a plurality of low-energy band gap polymers (PCPDTBT) and a plurality of phenyl-C61-butyric acid methylester (PC61BM (n-type material)); wherein the plurality of poly 3-hexylthiophenes (P3HT) The weight ratio of multiple low-energy band gap polymers (PCPDTBT) and multiple phenyl-C61 methyl butyrate (PC61BM) is 1: 0.04: 1; a cathode layer (Ca / Al), which is overlaid on the The upper end face of the active layer. The cathode layer is composed of a calcareous layer (Ca) and an aluminum layer (Al). With this innovative and unique design, this creation mixes molybdenum trioxide in a volume ratio of 1: 3. as the hole transport layer PCE which increased from 1.97 to 3.11%, improved 58%, JSC of 8.57mA / cm ² to lift 9.61mA / cm ^2, to enhance the 12% fill factor increased from 0.44 to 0.61, with the active Adding PCPDTBT to the layer can enhance the absorption of infrared light, so the open circuit voltage is significantly increased, and the overall photoelectric conversion efficiency is also improved.

[This creation]

10‧‧‧Anode layer

20‧‧‧ Hole Transmission Layer

21‧‧‧Poly (3,4-dioxyethylenethiophene) -polystyrenesulfonic acid (PEDOT: PSS)

22‧‧‧Molybdenum trioxide

30‧‧‧Active Level

31‧‧‧ poly (3-hexylthiophene), P3HT (p-type material) polymer semiconductor

32‧‧‧ Low Energy Band Gap Polymer (PCPDTBT)

33‧‧‧phenyl-C61-butyric acid methylester (PC61BM (n-type material))

40‧‧‧ cathode layer

41‧‧‧ calcareous layer

42‧‧‧ aluminum layer

Figure 1: A cross-sectional view of this creation.

FIG. 2 is a visible view of ultraviolet light in this embodiment.

FIG. 3 is a PL fluorescence spectrum chart of this embodiment.

Figure 4: J-V curve diagram of this embodiment.

This creation provides a structure of a flexible polymer solar cell capable of improving photoelectric conversion efficiency, including: an anode layer (ITO PET) (10), which is made of an ITO soft plastic glass material; The hole transport layer (PEDOT: PSS: MoO ₃ ) (20) is provided on the end face of the anode layer (10). The hole transport layer (20) contains a plurality of poly (3,4-dioxyethylene) Thiophene) -polystyrenesulfonic acid (PEDOT: PSS) (21) and plural molybdenum trioxide (MoO ₃ ) (22); wherein the plural poly (3,4-dioxyethylenethiophene) -polybenzene The volume ratio of ethylene sulfonic acid (PEDOT: PSS) (21) and the plurality of molybdenum trioxide (MoO ₃ ) (22) is 1: 3; an active layer (P3HT: PCPDTBT: PC61BM) (30), which is superposed On the end face above the hole transport layer (20), the active layer (30) contains a plurality of poly (3-hexylthiophene), P3HT (p-type material)) (31) polymer semiconductor, PCPDTBT (32) and plural phenyl-C61-butyric acid methylester (PC61BM (n-type material)) (33) are mixed; wherein the plural poly 3 -Hexylthiophene (P3HT) (31), plural low energy band gap polymers (PCPDT The weight ratio of BT) (32) and plural phenyl-C61 methyl butyrate (PC61BM) (33) is 1: 0.04: 1; a cathode layer (Ca / Al) (40), and the cathode layer (40) is Covered on the end surface of the active layer (30), the cathode layer (40) comprises a calcareous layer (Ca) (41) and an aluminum layer (Al) (42).

The manufacturing method of this creation includes: an anode layer (ITO PET) (10), which is made of an ITO soft plastic glass material, cleaned after etching, and put into the ultraviolet light surface treatment 10 minutes; a hole transmission layer (PEDOT: PSS: MoO ₃ ) (20), which is arranged on the end face of the anode layer (10), and the hole transmission layer (20) contains a complex polymer (3, 4-dioxyethylenethiophene) -polystyrenesulfonic acid (PEDOT: PSS) (21) and a plurality of molybdenum trioxide (MoO ₃ ) (22) are mixed to form a mixed liquid; The above mixed solution was spin-coated at 5000 rpm and 50 seconds with different volume ratios of the complex poly (3,4-dioxyethylenethiophene) -polystyrenesulfonic acid (PEDOT: PSS) (21) and the complex trioxide. Molybdenum (MoO ₃ ) (22) is a 1: 3 mixed solution on the surface of the anode layer (10). After coating, the anode layer (10) and the hole transport layer (20) are baked at 120 ° C. 10 Minutes, making the hole transmission layer (20) to be solidified; an active layer (P3HT: PCPDTBT: PC61BM) (30) is arranged on the end face of the hole transmission layer (20), and the active layer (30 ) Is a poly (3-hexylthiophe) ne), P3HT (p-type material)) (31) polymer semiconductors, multiple low energy band gap polymers (PCPDTBT) (32), and multiple phenyl-C61-butyric acid methylester, PC61BM ( n-type material)) (33) mixed into a mixed liquid; the above-mentioned installation method is to spin-coat the mixed liquid at two rotation speeds: (500 rpm, 60 seconds; 1600 rpm, 1 second) with different weights. The proportion of the complex poly 3-hexylthiophene (P3HT) (31), the complex low energy band gap polymer (PCPDTBT) (32), and the complex phenyl-C61 methyl butyrate (PC61BM) (33) is 1: 0.04: 1 The mixed liquid is on the surface of the hole transport layer (20). After the solvent is annealed for 10 minutes, the anode layer (10) and the hole transport layer (20) and the active layer (30) combined are disposed. Bake in a heating device at 120 ° C for 30 minutes to make the active layer solidify; a cathode layer (Ca / Al) (40), the cathode layer (40) is overlaid on the active layer (30) On the end surface, the cathode layer (40) is composed of a calcareous layer (Ca) (41) and an aluminum layer (Al) (42), and the covering method is the calcareous layer (Ca) ( 41) and the aluminum layer (Al) (42) are thermally vapor-deposited on the surface of the active layer (30). maker.

Please refer to FIG. 2, which is a visible view of ultraviolet light generated from the experimental data of this creative example. The maximum absorption of this creative is 0.98, and the absorption wavelength of the active layer is about 450 ~ 650nm. The core-shell structure can be formed by mixing molybdenum trioxide as the hole transport layer, which can form better film formation. Adding PCPDTBT with the active layer can increase the absorption of infrared light and increase the absorbance. Absorbing more light can make More electron hole pairs are generated in the active layer, which increases the photocurrent. Please refer to Figure 3, which is the PL fluorescence spectrum diagram generated from the experimental data of this creative example. Molybdenum trioxide mixed as a hole transport layer can form a core-shell structure to make film formation better. Adding PCPDTBT with the active layer can increase the absorption of infrared light and produce better radiation light intensity; see section 4 As shown in the figure, it is a JV curve generated from the experimental data of this creative example. It can be found that when the molybdenum trioxide is mixed in a 1: 3 volume ratio as the hole transport layer, the PCE is increased from 1.97% to 3.11%. of 58%, JSC of 8.57mA / cm ² mentioned To 9.61mA / cm ^2, to enhance the 12% fill factor increased from 0.44 to 0.61, with the addition of the active layer can foster PCPDTBT absorbs infrared light, the open-circuit voltage and therefore significantly improved, but also the greater overall improvement of photoelectric Conversion efficiency.

Based on this, the creation of molybdenum trioxide in a 1: 3 volume ratio as the hole transport layer increased the PCE from 1.97% to 3.11%, an increase of 58%, and JSC from 8.57mA / cm ² to 9.61mA / cm ² , which has increased by 12%, the fill factor has been increased from 0.44 to 0.61, and the addition of PCPDTBT with the active layer can enhance the absorption of infrared light, so the open-circuit voltage has been significantly improved, and the overall photoelectric conversion efficiency has been greatly improved.

Summarizing the above descriptions, through the design of the above structure, this design can effectively overcome the shortcomings of the new style of practice, and further has the above-mentioned many advantages and practical values. Therefore, this creation is a very creative new style creation, and in the same No identical or similar product creation or public use has been seen in the technical field, so this creation has met the requirements of "newness" and "progressiveness" of the new patent, and an application is filed in accordance with the law.

Claims (1)

A structure of a flexible polymer solar cell capable of improving photoelectric conversion efficiency, including: an anode layer (ITO PET), which is made of an ITO soft plastic glass material; an hole transport layer (PEDOT: PSS: MoO) ₃ ), which is arranged on the upper end surface of the anode layer, and the hole transport layer contains a plurality of poly (3,4-dioxyethylene thiophene) -polystyrene sulfonic acid (PEDOT: PSS) and a plurality of trioxide molybdenum (MoO ₃₎ are mixed; wherein the plurality of poly (3,4-dioxyethylene thiophene) - polystyrene sulfonate (PEDOT: PSS) and the plurality of molybdenum trioxide (MoO ₃₎ the volume ratio of 1 : 3; an active layer (P3HT: PCPDTBT: PC61BM), which is disposed on the upper end surface of the hole transport layer, and the active layer contains a plurality of poly (3-hexylthiophene), P3HT (p Type material)) polymer semiconductor, multiple low-energy band gap polymers (PCPDTBT), and multiple phenyl-C61-butyric acid methylester (PC61BM (n-type material)) are mixed; The weight ratio of poly 3-hexylthiophene (P3HT), plural low-energy band gap polymers (PCPDTBT), and plural phenyl-C61 methyl butyrate (PC61BM) is 1: 0.04: 1; one negative Layer (Ca / Al), overlying the cathode layer system is disposed on the end face of the active layer, the cathode layer system comprises a layer of calcium (Ca) layer and an aluminum (Al) are formed.