Small molecule ternary solar cell with two synergistic electron acceptors for enhanced photovoltaic performance

Layer-by-Layer-Processed All-Polymer Solar Cells with Enhanced Performance Enabled by Regulating the Microstructure of PYIT-OD Upper Layer

“…In addition to the chemical interactions, the physical properties of additives such as their boiling point and evaporation rate can also be critical. Solvent additive may remain in the film for a longer time during the film formation process, facilitating the molecules to self-assemble into a well-structured microstructure morphology [23,24]. The reported study have demonstrated the effectiveness of additive to fine-tune the morphology of the active layer, resulting to more ordered structure and higher charge mobility.…”

Kinetic Monte Carlo Modelling of Organic Photovoltaic Devices

“…Based on the energetics and phase structure of the 3rd component, the location of the third component determines the operating mode. Four models have been proposed so far: charge transfer [204] , energy transfer [205] , parallel [206][207][208] and alloy [209,210] (figure 7.2). In a real device however, more than one mode may be present depending on the ratio of the third species with respect to the donor (acceptor) [194] .…”

Improving the efficiency and stability of binary small-molecule organic solar cells by incorporating a small amount of polymer acceptor

“…[13][14][15] S D /S A -type small-molecule organic solar cells (SMOSCs) have also drawn enormous research interest due to the easy purication, dened chemical structures and therefore the less batch-to-batch variation of the small-molecule materials. [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] Nevertheless, the unsuitable molecular stacking and crystallinity, and poor phase separation may lead to unbalanced charge mobility of SMOSCs therefore making their ll factor (FF) and short-circuit current density (J SC ) values lower than those of P D /S A -type OSCs. 16,17 Moreover, the relatively unstable morphology of the SMOSCs would also limit their practical application.…”

“…However, polymers are rarely used as a third component into the smallmolecule host for efficient SMOSCs. [28][29][30] Furthermore, less attention has been paid to the stability of ternary SMOSCs.…”