711026-06-1Relevant articles and documents
An all-small-molecule organic solar cell derived from naphthalimide for solution-processed high-efficiency nonfullerene acceptors
Yadagiri,Narayanaswamy,Revoju, Srikanth,Eliasson, Bertil,Sharma, Ganesh D.,Singh, Surya Prakash
supporting information, p. 709 - 717 (2019/01/24)
Two small molecules BYG-1 and BYG-2 with fluorene donor and benzothiadiazole acceptor units connected to the terminal naphthamide group via ethyne linker were designed and synthesized. In this work we have discussed the effect of fluorine atoms connected with electron withdrawing benzothiadiazole unit to the fluorene core (BYG-1). In this study, we have fabricated solar cells with small-molecular donor and acceptor materials in the device architecture of bulk-heterojunction, using highly conjugated BYG-1 and BYG-2 as electron acceptors along with an appropriate small molecule donor (SMD). After improving the device architecture of the active layer using a suitable donor-to-acceptor weight ratio with solvent vapour annealing, we achieved power conversion efficiencies of 8.67% and 7.12% for BYG-1 and BYG-2, respectively. The superior photovoltaic performance of the fluorine-substituted BYG-1 can be attributed to its higher crystallinity, more balanced charge transport mobilities and efficient exciton dissociation.
ORGANIC SEMICONDUCTOR MATERIAL, PREPARATION METHODS AND USES THEREOF
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Paragraph 0049; 0050; 0079-0081, (2013/11/19)
Disclosed are organic semiconductor material, preparation methods and uses thereof. The organic semiconductor material is shown as the following formula (P), in which R1, R2, R3, m, n, x and y are defined as the description. The said organic semiconductor material can be used in organic solar cell, organic field effect transistor, organic electroluminescence element, organic optical storage, organic non-linear material or organic laser element.