研究目的
Investigating the synthesis of monodispersed SnO2 microspheres for efficient electron transport layers in mesoscopic perovskite solar cells.
研究成果
The study demonstrates the successful synthesis of homogenous SnO2 microspheres with high specific surface area and good crystallinity, suitable for constructing efficient electron transport layers in perovskite solar cells. The spray coating method was effective in preparing high quality ETLs, leading to a high power conversion efficiency. The addition of graphene quantum dots further improved the charge transfer, achieving a best efficiency of 17.08%.
研究不足
The study focuses on the synthesis and application of SnO2 microspheres in perovskite solar cells, with limitations including the need for precise control over the solvothermal process and the challenge of achieving uniform film coverage with spray coating.
1：Experimental Design and Method Selection:
A surfactant-free solvothermal method was used to synthesize monodispersed SnO2 microspheres. Spray coating was exploited to prepare high quality electron transport layers due to the limitations of spin coating.
2：Sample Selection and Data Sources:
Tin (II) chloride dihydrate was dissolved in a premixed solution of n-propanol and concentrated hydrochloric acid for the synthesis of SnO2 microspheres.
3：List of Experimental Equipment and Materials:
Teflon-lined autoclave, spray gun, FTO substrates, and various chemicals including SnCl2?2H2O, NH2CH––NH2I, CH3NH3Br, PbI2, PbBr2, and Spiro-OMeTAD.
4：Experimental Procedures and Operational Workflow:
The SnO2 microspheres were synthesized via solvothermal treatment, washed, and then re-dispersed into ethanol for spray coating onto FTO substrates. Perovskite layers were then deposited atop the ETLs.
5：Data Analysis Methods:
The photovoltaic performance was characterized by J-V curves, IPCE spectra, and EIS spectra.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
