High-performance ternary blend polymer solar cells involving both energy transfer and hole relay processes
Year: 2015
Type: article
Abstract: The integration of multiple materials with complementary absorptions into a single junction device is regarded as an efficient way to enhance the power conversion efficiency (PCE) of organic solar cells (OSCs). However, because of increased complexity with one more component, only limited high-performance ternary systems have been demonstrated previously. Here we report an efficient ternary blend OSC with a PCE of 9.2%. We show that the third component can reduce surface trap densities in the ternary blend. Detailed studies unravel that the improved performance results from synergistic effects of enlarged open circuit voltage, suppressed trap-assisted recombination, enhanced light absorption, increased hole extraction, efficient energy transfer and better morphology. The working mechanism and high device performance demonstrate new insights and design guidelines for high-performance ternary blend solar cells and suggest that ternary structure is a promising platform to boost the efficiency of OSCs.
Source: Nature Communications
DOI: 10.1038/ncomms8327
Institutions: University of Chicago, Argonne National Laboratory
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $6,990
Funders: National Science Foundation, U.S. Department of Energy, National Institute of Standards and Technology, Office of Science, Division of Materials Research, Division of Chemistry, Basic Energy Sciences, Center for Hierarchical Materials Design, Argonne National Laboratory, Lawrence Berkeley National Laboratory
Awards: G102163711, G107546177, G1079818582, G1143651532, G1286236842, G1286251239, G1313983767, G1414775356, G1445641779, G1505794299, G1664757510, G1816284028, G2101401529, G2287611682, G2618837358, G262962599, G2638771445, SEP Collaborative: Development of Economically Viable, Highly Efficient Organic Photovoltaic Solar Cells, G2857863752, G2887060908, G2900698238, G30714459, G3075337988, G3083819904, G340565428, G365575497, Search for Electron-Deficient Semiconducting Polymers to Rival Fullerenes, G4158950854, G419881185, G426311843, G42916606, G4501827968, G498139845, G5106849484, G5387317844, G5849692847, G5910536577, G650090426, G654302390, G6652958823, G6848031779, G6918803902, G7354628648, G7368700025, G7372914744, G7583137537, G805243471, G969889393, G993149817
OpenAlex ID: W634454473