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ossila材料FBR

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产品名称: ossila材料FBR
产品型号: 1644381-95-2
产品展商: Ossila
产品文档:
 MSDS fbr

简单介绍


ossila材料FBR  的详细介绍

FBR (CAS number 1644381-95-2) having a similar AA-D-AA type structure to IDFBR, contains electron-donating alkylated fluorene as the core, flanked by electron withdrawing benzothiadiazole (BT) and 3-ethylrhodanine units on the periphery terminals.

FBR reduces the tendency of crystallization and helps to prevent the formation of large crystalline domains in the BHJ donor/acceptor blend composition leading to better device performance efficiency and longer life-times.

Comparing to PC71BM, FBR has a relatively high lowest unoccupied molecular orbital (LUMO) which in theory should give a higher open voltage (Voc). This is indeed the case for polymer organic solar cells with PffBT4T-2DT as the polymer donor and FBR as the electron acceptor, yielding a device performance efficiency over 7.8% with an open voltage of 1.12 eV. This is one of the highest achieved open voltages for polymer organic solar cells.

Device structure: ITO/ZnO/PffBT4T-2DT:FBR/MoOx/Ag [1]

Thickness (nm) VOC (V) JSC (mA cm-2) FF (%) PCE (%)
120 1.12 11.5 61 7.8

General Information


CAS Number 1644381-95-2
Chemical Formula C53H56N6O2S6
Purity >98% (1H NMR)
Full Name 5,5′-[(9,9-Dioctyl-9H-fluorene-2,7-diyl)bis(2,1,3-benzothiadiazole-7,4-diylmethylidyne)]bis[3-ethyl-2-thioxo-4-thiazolidinone]
Molecular Weight 1001.44 g/mol
Absorption* λmax 510 nm (Film)
HOMO / LUMO HOMO = -5.83 eV, LUMO = -3.75 eV [1]
Solubility Chloroform, chlorobenzene
Form Red powder/crystals
Synonyms (5Z,5'Z)-5,5'-((7,7'-(9,9-dioctyl-9H-fluorene-2,7-diyl)bis(benzo[c][1,2,5]thiadiazole-7,4-diyl))bis(methanylylidene))bis(3-ethyl-2-thioxothiazolidin-4-one)
Classification / Family NFAs, n-type non-fullerene electron acceptors, Organic semiconducting materials, Low band-gap small molecule, Small molecular acceptor, Organic photovoltaics, Polymer solar cells, NF-PSCs.
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