The Synthesis And Photovoltaic Properties Of The Multiple Sulfide

The development of thin film solar cells is to reduce the quality of the battery in order to reduce the cost of the battery. Thin film solar cell solar battery direction research focus with its unique advantages, Multiple compound thin film solar cell materials become a hot research field of nanomaterials today.The main contents are summarized as follows:(1) We obtained the CZTS and CZTSe thin film photovoltaic material on stainless steel and FTO substrate by in-situ growth method..In the work about CZTS, we have studied the effects of reaction temperature, time, alloy thickness, substrate and other factors on the formation of CZTS film. The products under various experimental conditions were Characterization by XRD and Raman test. We get the following conclusions:The FTO substrate was more suitable for the formation of CZTS crystal, the temperature is the main controlling factor for the formation of CZTS crystal. The products on FTO substrate were Characterization by FETEM test and the growth mechanism were guessed. The TEM and HRTEM test results are more qualitative description of our product, the FTO substrate UV-Vis product testing and optical response test prove that our products can be the assembly of the optics. We make the research about CZTSe based on the CZTS. We studied the effects of reaction temperature and time for the formation of CZTSe film. We take the XRD and Raman test for the product under various experimental conditions. The conclusions are as follows:we can obtain the CZTSe under the condtion24h and270℃. Increasing temperature and reaction time is a good way for the synthesis of CZTSe.(2)We obtained a three-dimensional flower-shaped structure NaInS2by using wet chemical synthesis methods. The materials NaOH and S are low-cost. We use the same method to synthesis the CZTS powder. We investigative various factors for the formation of crystals, including the proportion of S and NaOH, time, temperature. The optimum conditions obtained product formation is S:NaOH=1:3, the reaction temperature is160℃, the reaction time for12h. We speculate that the growth mechanism and found that the whole process is a self-assembly process. Its optically active testing, the substance under the conditions of the visible light, an hour can Degradation of RhB, having good optical activity. We were synthesized the quaternary sulfides powder of CZTS based on the NaInS2. We studied the various factors affecting the formation of crystals:an amount of S powder, the ratio of S and NaOH, time, temperature, etc. We obtained the best conditions for product formation.This thesis focuses on CZTS nanocrystalline materials prepared substrate temperature is higher, the process is complicated and harsh reaction conditions and morphology. Provided which does not require any templates do not need to add any surface active agents, having to go through the tedious post-processing operation in the impurity in a lower temperature to obtain high-purity nano-sheet structure Cu2ZnSnS4quaternary compound photoelectric method of thin film material, for CZTS industrialized production has important significance.