lt;pgt;1. Focusing on the utilization of solar energy, the performance exploration, preparation processes and devices of copper indium gallium selenide solar cells, nano-optical materials, transparent electrode films, new superconducting materials, graphene, etc. have been carried out Integrate research and achieve better work. In 2010, he published about 15 SCI papers (including JACS, Adv. Mater., Adv. Funct. Mater., Eng. Environ. Mater., etc.), 18 patent applications (4 international patents), and 5 patent authorizations. 2. Focusing on the development of a low-cost preparation process for large-area, high-efficiency CIGS solar cells, high-performance CIGS thin-film solar cells were prepared using a non-vacuum liquid phase method with independent intellectual property rights. Small-area (0.4 cm2) cells were used in AM1.5 The photoelectric conversion efficiency under simulated sunlight has reached 13.83. It is the first company in China to use non-vacuum liquid phase method to prepare high-efficiency CIGS thin-film solar cells. It has been tested and confirmed by the Solar Photovoltaic Power Generation System and Wind Power Generation System Quality Inspection Center of the Chinese Academy of Sciences. 3. Exploration of new structures and new materials for CdTe batteries was carried out. A texturing method that is compatible with the current CdTe process was discovered, and a new CdTe cell light-limiting structure was proposed, which was determined to improve light absorption through QE testing. Using p-type graphene as the electrode material of the CdTe battery, and using it as the back electrode, the battery efficiency is 9.1, which is expected to be further improved after optimizing the process. Single-layer to multi-layer graphene transparent conductor films achieve sheet resistance [~1000W (single layer) ~ 200W (6-7 layers)] and build new structural batteries (Glass/n-Graphene/CdS /CdTe /p-Graphene) The efficiency reaches 4.1. 4. Proposed a new composite structure - semiconductor|semi-metal|semiconductor. This structure can greatly improve the utilization efficiency of solar energy. It can be used as an excellent electrode material for dye-sensitized solar cells and can also be used as a good light source. Catalytic materials. At the same time, we have developed a simple method for synthesizing semiconductor composite titanium dioxide hollow sphere materials, which can control the film thickness, hollow to solid and composition of the hollow spheres. This method uses crystal water-containing sulfate-assisted solvothermal process to synthesize titanium dioxide composite materials. The obtained composite titanium dioxide shows excellent performance in photocatalytic degradation of organic pollutants and as an electrode material for dye-sensitized solar cells. In addition, based on previous research on niobium-doped titanium dioxide nanocrystals, we conducted research on tantalum-doped titanium dioxide nanocrystal materials and also obtained the expected results. These works were published in Adv. Mater. 2010, 22, 3719-3722 and Adv. Funct. Mater. 2010, 20, 509–515. 5. Using the magnetron sputtering method, a self-made highly conductive oxygen-deficient ZnO-based nanoceramic target was used to prepare a ZnO-based transparent conductive film with superior electrical and optical properties, and the nucleation and The two growth steps were independently controlled to prepare a ZnO-based film with a highly textured surface. The prepared film has better crystallinity, and its sheet resistance (0.66 W/sq), visible transmittance (~90) and RMS roughness (40.2 nm) all meet or exceed those reported in the literature. This work was published in ACS Appl. Mater. Interfaces, 2 (2010) 2147–2152.
6. Through the design of new refractive index gradient nanostructures, nanoporous structures such as self-assembled gradient array structures of nanospheres, nanofilm/nanosphere composite structures, PEG/PVP template method pore control films and ZnO/SiO2 double-layer structures can be prepared at low cost. The new nanocomposite structure is controllable, the refractive index is quasi-continuously adjustable between the substrate and the air, and has good wide-spectrum anti-reflection and anti-reflection properties. Explore and study its anti-reflection and anti-reflection mechanism, and study the composite technology of functional nanoparticles and micro-nano Particle compounding technology, develop nanoparticle surface modification technology to improve the coating's comprehensive properties such as adhesion, wear resistance, hydrophobicity, and self-cleaning, and study the application and development of this process in the direction of solar cells, with visible light antireflection reaching 99.1 , and conducted research on industrialization technology amplification and applied for 3 patents. 7. Based on the principle of similar phase aggregation and the idea of ??thermodynamic reverse design, by selecting a suitable raw material system with high reactivity and using a reaction sintering method, a low-temperature rapid synthesis method was used to successfully synthesize SmFeAsO-based superstructure with high Tc and high Hc2 at 900°C for the first time. guide material. On this basis, simpler mechanical alloying methods and faster microwave synthesis methods were developed. Using more reactive "metastable" SmAs and FeO as the main raw materials, the synthesis conditions of SmFeAsO-based superconducting materials are effectively reduced to 900°C/2 hours; the use of non-elemental compound raw materials such as LnOF and Fe2As can be effectively avoided The intermediate reaction process thereby reduces the content of impurities. The reactivity of the powder can be improved through high-energy ball milling, and the synthesis conditions of F-doped 1111 system iron-based superconducting materials can be further reduced to 900°C/20 minutes of the low-temperature rapid synthesis method, with Tc ~ 50K and Hc2 ~ 390T. This work was published in J. Am. Chem. Soc., 132, 3260–3261 (2010), and was reviewed by Nature Asia.
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