CN112802966A - Full-small-molecule organic solar cell and preparation method thereof - Google Patents
Full-small-molecule organic solar cell and preparation method thereof Download PDFInfo
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/20—Carbon compounds, e.g. carbon nanotubes or fullerenes
- H10K85/211—Fullerenes, e.g. C60
- H10K85/215—Fullerenes, e.g. C60 comprising substituents, e.g. PCBM
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/30—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising bulk heterojunctions, e.g. interpenetrating networks of donor and acceptor material domains
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Abstract
The invention belongs to the technical field of solar cells, and particularly discloses a full-small-molecule organic solar cell and a preparation method thereof. The all-small-molecule organic solar cell comprises an active layer, and the preparation method comprises the following steps: adding a fullerene additive during preparation of the active layer; under the condition that other parameters of the active layer are kept unchanged, the fullerene additive is introduced and added by adopting a mutual solubility strategy, the phase separation scale, crystallinity and domain size of the active layer film are finely optimized, the filling factor is greatly improved, the problem of fine morphology optimization of the active layer of the all-small-molecule organic solar cell is solved, and the purpose of improving the photoelectric conversion efficiency of the organic solar cell is achieved. The method avoids the development of new materials and the innovation of device processes, can greatly reduce the manufacturing cost, is expected to replace the existing morphology regulation and control method, and becomes a mainstream method for improving the efficiency of the all-small-molecule organic solar cell.
Description
Technical Field
The invention relates to the technical field of solar cells, in particular to the field of organic small-molecule photovoltaic devices and organic semiconductor thin-film solar cells, and particularly relates to a full small-molecule organic solar cell and a preparation method thereof.
Background
The organic solar cell can be prepared by a solution method, has the advantages of low cost of raw materials, portability, easy realization of large-area preparation, flexibility and the like, has wide application prospect in the fields of portable power generation, offshore space power generation and the like, and makes the organic photovoltaic cell become one of research hotspots in academia and industry. In recent two years, with the advent of the receptor Y6, the photoelectric conversion efficiency of the organic solar cell is greatly improved. Compared with polymers, the micromolecules have the advantages of high purity, accurate molecular structure and high repetition rate, are more suitable for market popularization, and become one of the optimal choices for realizing industrialization of organic photovoltaic cells.
The core bottleneck of the all-small-molecule organic solar cell is that the photoelectric conversion efficiency is low, the efficiency of a binary device based on Y6 is only over 14% at most, and compared with a polymer-small-molecule system, the all-small-molecule organic solar cell is far from sufficient. In order to realize commercialization, it is necessary to greatly improve the efficiency of all small molecule organic solar cells. The morphology in the all-small-molecule organic solar cell is a crucial factor for determining the efficiency of the all-small-molecule organic solar cell, so that the method for adjusting and controlling the morphology of an active layer to realize phase separation optimization is the most direct and simple method for improving the efficiency. The phase separation morphology can also be optimized by synthesizing new donor/acceptor materials or carrying out interface modification, so that the photoelectric conversion efficiency of the device is improved. However, synthesizing new materials and searching new interface layer materials have complex process conditions and high cost, and are not suitable for commercial popularization. Meanwhile, the morphology of the active layer is very sensitive, and usually a small change can bring about a great change of the active layer material in the aspects of phase separation, molecular arrangement, crystallinity and domain size. Such as different post-treatment conditions, directly result in a very different arrangement of the active layers. However, in the field of all-small-molecule organic solar cells, a technology for finely regulating the morphology of an active layer of an all-small-molecule organic solar cell by adding an additive is only reported, and further intensive research is required.
In the related reports, the efficiency of a polymer-small molecule system can be effectively improved by adding an additive, such as a solid additive A3, and the additive is widely applied to the regulation of the morphology of an active layer of a device in a polymer organic solar cell to improve the photoelectric conversion efficiency of the device. The reason is that A3 can interact with donor and acceptor to form a eutectic phase, and is successfully applied to a binary polymer organic solar cell (PM 6: Y6), and 6% of photoelectric conversion efficiency is improved. However, such methods suitable for morphology control of the active layer of the polymer organic solar cell are rarely reported in all small organic solar cell systems.
In view of the above, the method for finely adjusting the morphology of the active layer of the full-scale solar cell to improve the photoelectric conversion efficiency has great scientific influence and practical significance.
Disclosure of Invention
In view of the above drawbacks of the prior art, an object of the present invention is to provide an all-small-molecule organic solar cell and a method for manufacturing the same, which can greatly increase a fill factor by adding a fullerene additive while keeping other parameters of an active layer unchanged, thereby achieving an increase in photoelectric conversion efficiency of the all-small-molecule organic solar cell based on an all-small-molecule system (BTR-Cl: Y6).
In order to achieve the above and other related objects, an aspect of the present invention provides a method for manufacturing a full small molecule organic solar cell, the full small molecule organic solar cell including an active layer, the method comprising: and a fullerene additive is added during the preparation of the active layer, so that the photoelectric conversion efficiency of the solar cell is improved.
Further, the all-small-molecule organic solar cell sequentially comprises a substrate, a hole transport layer, an active layer, an electron transport layer and a metal electrode, and the preparation method comprises the following steps: spin-coating a hole transport layer on a substrate, and then carrying out thermal annealing treatment; spin-coating an active layer on the hole transport layer, wherein the preparation materials of the active layer comprise a donor, an acceptor and a fullerene additive, and then carrying out solvent thermal annealing treatment and thermal annealing treatment; and then, spin-coating an electron transport layer on the active layer, and finally, evaporating a metal electrode on the electron transport layer to obtain the solar cell.
Optionally, the fullerene additive is selected from PC60BM、PC71BM and at least one of its derivatives, preferably PC71BM。
Optionally, the fullerene additive accounts for 1-8% wt of the specific weight of the preparation material of the active layer.
Alternatively, the donor is BTR-Cl and the acceptor is Y6.
Optionally, in the active layer, the mass ratio of the donor to the acceptor is 2: 1.
Optionally, the spin coating conditions of the hole transport layer are 3000-6000 rpm and 15-30s, preferably 4000rpm and 20 s.
Optionally, the thermal annealing temperature of the hole transport layer is 120-180 ℃, and preferably 120 ℃; the thermal annealing time of the hole transport layer is 10-20 min, preferably 10 min.
Optionally, the spin coating conditions of the active layer are 1000-2000 rpm and 40-60s, preferably 1500rpm and 40 s.
Optionally, the solvent used for the solvent annealing treatment of the active layer is chloroform or chlorobenzene; the solvent annealing treatment time of the active layer is 20-60 s, and preferably 30 s.
Optionally, the thermal annealing temperature of the active layer is 120-180 ℃, and preferably 120 ℃; the thermal annealing time of the active layer is 10-20 min, preferably 10 min.
Optionally, the spin coating conditions of the electron transport layer are 1500-3000 rpm and 10-30s, preferably 2000rpm and 10 s.
Optionally, the solar cell is of an upright device structure, that is, the solar cell sequentially includes, from bottom to top, a substrate, a hole transport layer, an active layer, an electron transport layer, and a metal electrode.
Optionally, the substrate includes transparent glass and a transparent conductive electrode, the transparent conductive electrode is a positive electrode, and the metal electrode is a negative electrode.
Optionally, the material of the transparent conductive electrode is Indium Tin Oxide (ITO).
Optionally, the material of the negative electrode is Ag or Al, preferably Ag.
Optionally, the thickness of the negative electrode is 80-150nm, preferably 100 nm.
Optionally, the material of the hole transport layer is PEDOT: PSS.
Optionally, the material of the electron transport layer is selected from one of DPO, PFN-Br and PDINO.
Optionally, the thickness of the active layer is 100-120 nm, and preferably 110 nm.
Optionally, the hole transport layer has a thickness of 25-50nm, preferably 35 nm.
Optionally, the thickness of the electron transport layer is 5-10nm, preferably 8 nm.
In another aspect, the invention provides an all-small-molecule organic solar cell prepared according to the preparation method.
As described above, the all-small-molecule organic solar cell and the preparation method thereof of the present invention have the following beneficial effects:
aiming at the existing all-small-molecule organic solar cell, the invention breaks through the core bottleneck of low photoelectric conversion efficiency, and introduces a fullerene additive to finely regulate the appearance of an active layer by adopting an intersolubility strategy. Under the condition that other process parameters are not changed, the problem of fine morphology optimization of the active layer of the all-small-molecule organic solar cell is solved, the phase separation scale, crystallinity and domain size of the thin film of the active layer are finely optimized, and the filling factor is greatly improved, so that the purpose of improving the photoelectric conversion efficiency of the organic solar cell is achieved.
The method is simple and effective, and is suitable for improving the photoelectric conversion efficiency of the solar cell in a full small molecule system (BTR-Cl: Y6). The method avoids the development of new materials and the innovation of device processes, can greatly reduce the cost, can greatly improve the photoelectric conversion efficiency of the all-small-molecule organic solar cell only by adding the fullerene additive, is expected to replace the existing morphology regulation and control method, becomes a mainstream method for improving the efficiency of the all-small-molecule organic solar cell, and has unlimited commercial potential in the future industrialization process.
Drawings
FIG. 1 shows an active layer material (BTR-Cl, Y6, PC) used in the preparation of an all-small molecule organic solar cell according to an embodiment of the present invention71BM).
Fig. 2 is a schematic structural diagram of a full-molecular organic solar cell device according to an embodiment of the present invention.
FIG. 3 shows example 1 of the present invention (BTR-Cl: PC)71BM: Y6 ═ 2: 0.05: 1), example 2 (BTR-Cl: PC)71BM: Y6 ═ 2: 0.15: 1), example 3 (BTR-Cl: PC)71BM: Y6 ═ 2: 0.25: 1), example 4 (BTR-Cl: PC)71BM: Y6 ═ 2: 0.35: 1) and comparative example 1 (BTR-Cl: Y6 ═ 2: 1) solar cells under standard test conditions (AM1.5, 100 mW/cm)2) Current density-voltage characteristic graph of (a).
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
The invention provides a full small molecule organic solar cell, which improves the photoelectric conversion efficiency of the full small molecule organic solar cell by adding a fullerene additive. The invention aims to:
aiming at the existing all-small-molecule organic solar cell, the core bottleneck of low photoelectric conversion efficiency is broken through, and the fullerene additive is introduced by adopting an intersolubility strategy to finely regulate the appearance of an active layer. Under the condition that other process parameters are not changed, the problem of fine morphology optimization of the active layer of the all-small-molecule organic solar cell is solved, the phase separation scale, crystallinity and domain size of the thin film of the active layer are finely optimized, and the filling factor is greatly improved, so that the purpose of improving the photoelectric conversion efficiency of the organic solar cell is achieved. The method is suitable for improving the photoelectric conversion efficiency of the solar cell in a full small molecule system (BTR-Cl: Y6).
Compared with the traditional method for improving the photoelectric conversion efficiency of the full-small-molecule organic solar cell (such as new donor/acceptor material design, device process innovation, interface modification and the like), the method has huge advantages, is simple and effective, regulates and controls the appearance of the active layer of the cell only by adding the fullerene additive, improves the intersolubility of a donor and an acceptor, obtains a better donor and acceptor domain size, reduces the carrier bimolecular recombination rate, enables free charges to be effectively transmitted and collected, and finally realizes the improvement of the efficiency of the full-small-molecule organic solar cell. The method avoids the huge investment in new material synthesis and device process innovation, realizes the improvement of the photoelectric conversion efficiency of the all-small-molecule organic solar cell only by adding the additive, is expected to replace the existing morphology regulation and control method, becomes a mainstream method for realizing the improvement of the efficiency of the all-small-molecule organic solar cell, and has unlimited commercial potential in the future industrialization process.
In the embodiment of the invention, a test is carried out by taking a full small molecule organic solar cell based on a high-efficiency full small molecule system (BTR-Cl: Y6) as an example, as shown in FIG. 1, the solar cells in the following embodiments and comparative examples are all of positive device structures, namely the solar cell sequentially comprises a substrate, a hole transport layer, an active layer, an electron transport layer and a metal electrode from bottom to top; the preparation method of the solar cell comprises the following steps: spin-coating a hole transport layer on a substrate, and then carrying out thermal annealing treatment; spin-coating an active layer on the hole transport layer, wherein the preparation materials of the active layer comprise a donor, an acceptor and a fullerene additive, and then carrying out solvent thermal annealing treatment and thermal annealing treatment; and then, spin-coating an electron transport layer on the active layer, and finally, evaporating a metal electrode on the electron transport layer to obtain the solar cell.
Wherein the fullerene additive is selected from PC60BM、PC71BM and at least one of its derivatives.
Wherein the fullerene additive accounts for 1-8 wt% of the specific weight of the preparation material of the active layer.
In the following examples, the positive electrode material was Indium Tin Oxide (ITO), and the hole transport layer was poly (3, 4-ethylenedioxythiopene): poly (styrene sulfonate) (PEDOT: PSS), BTR-Cl as donor, Y6 as acceptor and PC as fullerene additive are selected as active layer71BM, an electron transport layer is phenyl (2-naphthyl) diphenylphosphine oxide (DPO), and a cathode material is Ag. In the following examples, ITO is available from preferably Kotech, PEDOT: PSS using Clevios AL4083, BTR-Cl is available from 1Material Tech Inc, Y6 is available from Reunion, PC71BM is available from 1umtech Inc; DPO is commercially available from 1Material Tech Inc. Materials BTR-Cl, Y6, PC71The molecular structural formula of BM is shown in figure 1.
In addition, the cathode material in the all-small-molecule organic solar cell can also adopt Al, and the material of the electron transport layer can also adopt PFN-Br and PDINO.
In the invention, the spin coating conditions of the hole transport layer are 3000-6000 rpm and 20-40s, specifically 4000rpm and 20s in the following embodiment; the thickness of the hole transport layer is 25-50nm, specifically 35nm in the following examples; the thermal annealing temperature of the hole transport layer is 120-180 ℃, and the thermal annealing temperature is 120 ℃ in the following embodiment specifically; the thermal annealing time of the hole transport layer is 8-15 min, specifically 10min in the following examples.
In the invention, the spin coating conditions of the active layer are 1000-2000 rpm and 40-60s, and the following embodiment specifically comprises 1500rpm and 40 s; the thickness of the active layer is 100-120 nm, and is specifically 110nm in the following embodiment; the solvent adopted for the solvent annealing treatment of the active layer is chloroform or chlorobenzene; the solvent annealing time of the active layer is 20 to 60 seconds, specifically 30 seconds in the following examples.
In the invention, the spin coating conditions of the electron transmission layer are 1500-3000 rpm and 10-30s, and the following embodiments specifically refer to 2000rpm and 10 s; the thickness of the electron transport layer is 5 to 10nm, and in the following examples, 8 nm.
In the present invention, the thickness of the negative electrode is 80 to 150nm, and is specifically 100nm in the following examples.
The specific implementation process of the invention is as follows:
example 1
Carrying out ultrasonic cleaning on a substrate consisting of transparent glass and a transparent conductive electrode ITO by using cleaning solution, deionized water, acetone and isopropanol respectively, and drying by using nitrogen after cleaning; treating the substrate in an ozone cleaning machine for 15min, spin-coating a hole transport layer material PEDOT: PSS (4000rpm, 20s, film thickness of 30nm) in the air, then carrying out thermal annealing treatment (120 ℃, 10min) in the air, then introducing the sample into a glove box filled with nitrogen, and preparing an active layer (BTR-Cl: PC) on the PEDOT: PSS hole transport layer by adopting a spin-coating method71BM: Y6: 2: 0.05: 1, 17mg/ml, 1500rpm, 40s, active layer thickness: approximately equal to 110nm), carrying out solvent annealing treatment (CF, 30s) on the obtained active layer film in a glove box, and then carrying out thermal annealing treatment (120 ℃/10 min); subsequently, an electron transport layer DPO (2000rpm, 10s, 5nm thick) was spin-coated on the active layer, and then an Ag electrode (100 nm thick) was vapor-deposited on the electron transport layer to obtain a solar cell.
Example 2
Carrying out ultrasonic cleaning on a substrate consisting of transparent glass and a transparent conductive electrode ITO by using cleaning solution, deionized water, acetone and isopropanol respectively, and drying by using nitrogen after cleaning; treating the substrate in an ozone cleaning machine for 15min, and spin-coating a hole transport layer material PEDOT: PS in the airS (4000rpm, 20S, 30nm thick), then carrying out thermal annealing treatment in air (120 ℃, 10min), then introducing the sample into a glove box filled with nitrogen, and preparing an active layer (BTR-Cl: PC) on the PEDOT: PSS hole transport layer by adopting a spin coating method71BM: Y6: 2: 0.15: 1, 17mg/ml, 1500rpm, 40s, active layer thickness: approximately equal to 110nm), carrying out solvent annealing treatment (CF, 30s) on the obtained active layer film in a glove box, and then carrying out thermal annealing treatment (120 ℃/10 min); subsequently, an electron transport layer DPO (2000rpm, 10s, 5nm thick) was spin-coated on the active layer, and then an Ag electrode (100 nm thick) was vapor-deposited on the electron transport layer to obtain a solar cell.
Example 3
Carrying out ultrasonic cleaning on a substrate consisting of transparent glass and a transparent conductive electrode ITO by using cleaning solution, deionized water, acetone and isopropanol respectively, and drying by using nitrogen after cleaning; treating the substrate in an ozone cleaning machine for 15min, spin-coating a hole transport layer material PEDOT: PSS (4000rpm, 20s, film thickness of 30nm) in the air, then carrying out thermal annealing treatment (120 ℃, 10min) in the air, then introducing the sample into a glove box filled with nitrogen, and preparing an active layer (BTR-Cl: PC) on the PEDOT: PSS hole transport layer by adopting a spin-coating method71BM: Y6: 2: 0.25: 1, 17mg/ml, 1500rpm, 40s, active layer thickness: approximately equal to 110nm), carrying out solvent annealing treatment (CF, 30s) on the obtained active layer film in a glove box, and then carrying out thermal annealing treatment (120 ℃/10 min); subsequently, an electron transport layer DPO (2000rpm, 10s, 5nm thick) was spin-coated on the active layer, and then an Ag electrode (100 nm thick) was vapor-deposited on the electron transport layer to obtain a solar cell.
Example 4
Carrying out ultrasonic cleaning on a substrate consisting of transparent glass and a transparent conductive electrode ITO by using cleaning solution, deionized water, acetone and isopropanol respectively, and drying by using nitrogen after cleaning; treating the substrate in an ozone cleaning machine for 15min, spin-coating a hole transport layer material PEDOT: PSS (4000rpm, 20s, film thickness of 30nm) in air, performing thermal annealing treatment (120 ℃, 10min) in air, introducing the sample into a glove box filled with nitrogen, and applying spin coating on the PEDOT: PSS hole transport layerMethod of coating to prepare an active layer (BTR-Cl: PC)71BM: Y6: 2: 0.35: 1, 17mg/ml, 1500rpm, 40s, active layer thickness: approximately equal to 110nm), carrying out solvent annealing treatment (CF, 30s) on the obtained active layer film in a glove box, and then carrying out thermal annealing treatment (120 ℃/10 min); subsequently, an electron transport layer DPO (2000rpm, 10s, 5nm thick) was spin-coated on the active layer, and then an Ag electrode (100 nm thick) was vapor-deposited on the electron transport layer to obtain a solar cell.
Comparative example 1
Carrying out ultrasonic cleaning on a substrate consisting of transparent glass and a transparent conductive electrode ITO by using cleaning solution, deionized water, acetone and isopropanol respectively, and drying by using nitrogen after cleaning; placing the substrate into an ozone cleaning machine for treatment for 15min, spin-coating a hole transport layer material PEDOT: PSS (4000rpm, 20s, and the film thickness is 30nm) in the air, then carrying out thermal annealing treatment (120 ℃ and 10min) in the air, then introducing a sample into a glove box filled with nitrogen, preparing an active layer (BTR: Y6 ═ 2: 1, 17mg/ml, 1500rpm, 40s, and the film thickness of the active layer: ≈ 110nm) on the PEDOT: PSS hole transport layer by adopting a spin-coating method, carrying out solvent annealing treatment (CF, 30s) on the obtained active layer film in the glove box, and then carrying out thermal annealing treatment (120 ℃/10 min); subsequently, an electron transport layer DPO (2000rpm, 10s, 5nm thick) was spin-coated on the active layer, and then an Ag electrode (100 nm thick) was vapor-deposited on the electron transport layer to obtain a solar cell.
Under standard test conditions (AM1.5, 100 mW/cm)2) The solar cells of examples 1 to 4 and comparative example 1 were tested for performance, and the results are shown in fig. 3 and table 1.
TABLE 1
As can be seen from table 1, the photoelectric conversion efficiency of the solar cells in examples 1 to 4 is better than that of comparative example 1, and the above results show that the improvement of the photoelectric conversion efficiency of the all-small-molecule organic solar cell can be effectively realized by adding the fullerene additive. For organic solar energy electricity of whole small molecule system (BTR-Cl: Y6)For the cell, PC is added to the active layer71The mass fraction of BM is 1-8 w% to be beneficial to the improvement of the photoelectric conversion efficiency.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A preparation method of a full-small-molecule organic solar cell is characterized by comprising the following steps: the all-small-molecule organic solar cell comprises an active layer, and the preparation method comprises the following steps: and a fullerene additive is added during the preparation of the active layer, so that the photoelectric conversion efficiency of the solar cell is improved.
2. The method of claim 1, wherein: the all-small-molecule organic solar cell sequentially comprises a substrate, a hole transport layer, an active layer, an electron transport layer and a metal electrode, and the preparation method comprises the following steps: spin-coating a hole transport layer on a substrate, and then carrying out thermal annealing treatment; spin-coating an active layer on the hole transport layer, wherein the preparation materials of the active layer comprise a donor, an acceptor and a fullerene additive, and then carrying out solvent thermal annealing treatment and thermal annealing treatment; and then, spin-coating an electron transport layer on the active layer, and finally, evaporating a metal electrode on the electron transport layer to obtain the solar cell.
3. The method of claim 1, wherein: the fullerene additive is selected from PC60BM、PC71At least one of BM and derivatives thereof;
and/or the fullerene additive accounts for 1-8% wt of the specific weight of the preparation material of the active layer.
4. The method of claim 2, wherein: the donor is BTR-C1, and the acceptor is Y6;
and/or, in the active layer, the mass ratio of the donor to the acceptor is 2: 1.
5. The method of claim 2, wherein: the spin coating condition of the hole transport layer is 3000-6000 rpm and 15-30 s;
and/or the thermal annealing temperature of the hole transport layer is 120-180 ℃, and the thermal annealing time is 10-20 min;
and/or the spin coating condition of the active layer is 1000-2000 rpm for 40-60 s;
and/or the solvent adopted for the solvent annealing treatment of the active layer is chloroform or chlorobenzene, and the solvent annealing treatment time is 20-60 s;
and/or the thermal annealing temperature of the active layer is 120-180 ℃, and the thermal annealing time is 10-20 min;
and/or the spin coating condition of the electron transmission layer is 1500-3000 rpm for 10-30 s.
6. The method of claim 2, wherein: the solar cell is of a positive device structure.
7. The method of claim 2, wherein: the substrate comprises transparent glass and a transparent conductive electrode, the transparent conductive electrode is an anode, and the metal electrode is a cathode.
8. The method of claim 7, wherein: the transparent conductive electrode is made of indium tin oxide;
and/or the material of the negative electrode is Ag or Al;
and/or the thickness of the negative electrode is 80-150 nm.
9. The method of claim 2, wherein: the hole transport layer is made of PEDOT: PSS.
And/or the material of the electron transport layer is selected from one of DPO, PFN-Br and PDINO;
and/or the thickness of the active layer is 100-120 nm;
and/or the thickness of the hole transport layer is 25-50 nm;
and/or the thickness of the electron transport layer is 5-10 nm.
10. An all small molecule organic solar cell made according to the method of any one of claims 1-9.
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| CN113611800A (en) * | 2021-06-24 | 2021-11-05 | 成都灵睿奥创科技有限公司 | All-small-molecule organic solar cell based on novel additive and preparation method thereof |
| CN113629193A (en) * | 2021-07-28 | 2021-11-09 | 电子科技大学 | Organic solar cell with sandwich-configuration active layer and preparation method thereof |
| CN113880862A (en) * | 2021-09-09 | 2022-01-04 | 苏州大学 | Non-fullerene receptor with cooperative assembly characteristic and preparation method and application thereof |
| CN114497386A (en) * | 2022-01-19 | 2022-05-13 | 常州大学 | Method for regulating and controlling morphology of photoactive layer and solar cell applying same |
| CN114744127A (en) * | 2022-03-23 | 2022-07-12 | 华南理工大学 | Method for regulating and controlling longitudinal morphology of organic solar cell through solvent annealing post-treatment |
| CN114891023A (en) * | 2022-06-07 | 2022-08-12 | 中国科学院重庆绿色智能技术研究院 | Double-end-capped small-molecule electron donor material and preparation and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113611800A (en) * | 2021-06-24 | 2021-11-05 | 成都灵睿奥创科技有限公司 | All-small-molecule organic solar cell based on novel additive and preparation method thereof |
| CN113629193A (en) * | 2021-07-28 | 2021-11-09 | 电子科技大学 | Organic solar cell with sandwich-configuration active layer and preparation method thereof |
| CN113880862A (en) * | 2021-09-09 | 2022-01-04 | 苏州大学 | Non-fullerene receptor with cooperative assembly characteristic and preparation method and application thereof |
| CN114497386A (en) * | 2022-01-19 | 2022-05-13 | 常州大学 | Method for regulating and controlling morphology of photoactive layer and solar cell applying same |
| CN114497386B (en) * | 2022-01-19 | 2023-02-14 | 常州大学 | Method for regulating and controlling morphology of photoactive layer and solar cell applying same |
| CN114744127A (en) * | 2022-03-23 | 2022-07-12 | 华南理工大学 | Method for regulating and controlling longitudinal morphology of organic solar cell through solvent annealing post-treatment |
| CN114891023A (en) * | 2022-06-07 | 2022-08-12 | 中国科学院重庆绿色智能技术研究院 | Double-end-capped small-molecule electron donor material and preparation and application thereof |
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