Bulk-Heterojunction Organic Solar Cells: Interfacial Engineering Routes to Increased Open-Circuit Voltage and Power Conversion Efficiency

摘要

Organic photovoltaics (OPVs) offer potential attractions such as flexible substrates, lightweight materials, and inexpensive fabrication techniques such as spin-coating, doctor-blading, and printing.' This renders organic solar cells of interest in numerous areas where the properties of heavier, inflexible and more expensive inorganic cells are prohibitive. These potential advantages have led to intense research interest,2-8 resulting in increased power conversion efficiency (rip) of OPVs from less than 1% to the current records of -5% for bulkheterojunction (BHJ) cellew and -6% for small molecule cells." It is estimated that if OPVs can reach lip = 10%, which seems possible,12 they would be commercially viable.