1 results about "Polythiophene derivative" patented technology

This application discloses a solar cell, a photovoltaic device, an electrical appliance, and a power generation device. The solar cell includes at least a first light-absorbing layer and a hole transport layer, wherein the hole transport layer comprises polythiophene derivative molecules. The polythiophene derivative molecules possess good molecular arrangement and hole transport capability. The ester groups in the polythiophene derivative molecules can modulate the HOMO energy levels of the material without disrupting the molecular arrangement of the polythiophene derivative itself, thereby better matching the molecular energy levels of the hole transport layer and the first light-absorbing layer, thus improving the photoelectric conversion efficiency of the solar cell.