Square acid type organic small-molecular hole transport material and application thereof

The invention discloses a squaric acid type organic small-molecular hole transport material and application thereof, and relates to the technical field of photoelectric materials. The squaric acid type organic small-molecular hole transport material has a structural general formula as shown in the specification. The squaric acid type organic small-molecular hole transport material provided by the invention has relatively high hole mobility and photoelectric conversion efficiency, and can be used as a non-doped hole transport material; and a squaric acid micromolecule is simple in synthesis process, cheap and easily available in raw materials and good in stability, and can be used as a hole transport material of photoelectric devices such as perovskite solar cells, organic solar cells, organic light emitting diodes and field effect transistors. 本发明公开了一类方酸类有机小分子空穴传输材料及其应用，涉及光电材料技术领域，其具有如下结构通式：或本发明提出的方酸类有机小分子空穴传输材料具有较高的空穴迁移率和光电转换效率，可以作为非掺杂空穴传输材料；且该方酸类小分子合成过程简单，原料廉价易得，稳定性好，可以作为钙钛矿太阳电池、有机太阳电池、有机发光二极管、场效应晶体管等光电器件的空