Electrical Characteristics of Polymer Solar Cells Analyzed by Atomic Force Microscope of Scanning Probe Technique
The electrical characteristics of polymer solar cells were explored and analyzed by an atomic force microscope of scanning probe technique to explore the new conditions for performance improvement of the devices. With the continuous development and the advantages of inexpensive and flexible, polymer solar cells have become the current research hot spots. However, several factors that would affect the receptor materials have been discovered during the application of polymer solar cells. In addition to the current problems of photovoltaic conversion efficiency and device stability, the effective application of polymer solar cells has been limited. Due to its unique advantages, the scanning probe microscopes have attracted attention worldwide; besides, the application of scanning probe microscopes to the research and exploration of polymer solar cells would help observe the micro-structures of the devices, thereby finding the influential factors of cell performance and solving the problems reasonably. Therefore, the electrical characteristics of polymer solar cells were explored and analyzed by a scanning probe microscope. Research results have indicated that given different temperature conditions, the influential factors would differ; besides, it was found that the compatibility of P3HT and ICBA would lead to the instability of thin film in morphology, thereby causing the differences in stability between the two systems. The application of scanning probe technique to the research and exploration of electrical characteristics of polymer solar cells would provide a fundamental basis for the subsequent studies on the optimization of cell devices.