CAS Number 90076-65-6
Lithium bis(trifluoromethylsulphonyl)imide (LiTFSI), CAS number 90076-65-6, is a hydrophilic salt that can increase the conductivity of a range of organic semiconductors. It is commonly used as a p-dopant to enhance the conductivity and hole mobility of the Spiro-OMeTAD for perovskite solar cells. It is believed to function in PSCs is similar to that in solid-state dye-sensitised solar cells [2].
Some of the lithium ions can intercalate into TiO2 to downshift its conduction band, resulting in a higher photocurrent. The rest of the lithium ions can react with oxygen and Spiro-OMeTAD to facilitate the generation of oxidised Spiro-OMeTAD, while the large anion TFSI¯, can stabilise the oxidized Spiro-OMeTAD as the counterion [1, 2].
LiTFSI has been extensively studied as an electrolyte component in lithium-ion batteries (LIBs) and more. With a high solubility in water (21 molal), concentrated LiTFSI electrolytes can increase the stability of LIBs by reducing the number of water molecules surrounding salt ions. As a result, the water activity responsible for decomposition is decreased.
| CAS number | 90076-65-6 |
| Chemical formula | C2F6LiNO4S2 |
| Molecular weight | 287.09 g/mol |
| Synonyms |
|
| Classification / Family | Dye Sensitised Solar Cells (DSSC) , Light-emitting Diodes, Perovskite HTL Materials, Electrolyte materials. |
| Storage | Product is hygroscopic. Store under inert atmosphere or in a dessicator. |
| Purity | 99.99% |
| Boiling point | 234-238 °C (lit.) |
| Colour | White powder/crystals |
Chemical structure of LiTFSI, Lithium bis(trifluoromethanesulfonyl)imide
| Device structure | Jsc (mA cm-2) | Voc (V) | FF (%) | PCE (best) |
|---|---|---|---|---|
| FTO/c-TiO2/mp-Al2O3/CH3NH3PbBr3−xClx/CBP/Au [3] | 1.3 | 1.4 | 24 | 0.44 |
| FTO/c-TiO2/mp-Al2O3/CH3NH3PbBr3−xClx/ CBP:(TBP:LiTFSI, 10% wt)/Au | 4 | 1.5 | 46 | 2.7 |
19F NMR of Lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) in d6-DMSO
专业代理国外知名镊子品牌
我们将竭诚为你服务
0755-23003036
粤ICP备14069686号