Carbazole-based hole transporting material for solid state dye-sensitized solar cells: Influence of the purification methods

Highly Efficient Perovskite Solar Cells Employing an Easily Attainable Bifluorenylidene‐Based Hole‐Transporting Material

“…It is well known, that both organic impurities and metal residues may present in final raw organic semiconducting materials, and they are known to act as charge carrier traps or photoquenchers significantly affecting their original properties, consequently reducing the photovoltaic performance . Therefore, we have synthesized spiro‐OMeTAD in our lab under the same final cross‐coupling step and purified using both flash chromatography and precipitation procedures as for KR216 , having the same purity grade in order to achieve a more accurate comparison.…”

Highly Efficient Perovskite Solar Cells Employing an Easily Attainable Bifluorenylidene‐Based Hole‐Transporting Material

“…[17,18] Therefore,w eh ave synthesized spiro-OMeTAD in our lab under the same final cross-coupling step and purified using both flash chromatography and precipitation procedures as for KR216,h aving the same purity grade in order to achieve am ore accurate comparison. [17,18] Therefore,w eh ave synthesized spiro-OMeTAD in our lab under the same final cross-coupling step and purified using both flash chromatography and precipitation procedures as for KR216,h aving the same purity grade in order to achieve am ore accurate comparison.…”

“…It is well known, that both organic impurities and metal residues may present in final raw organic semiconducting materials,and they are known to act as charge carrier traps or photoquenchers significantly affecting their original properties,c onsequently reducing the photovoltaic performance. [17,18] Therefore,w eh ave synthesized spiro-OMeTAD in our lab under the same final cross-coupling step and purified using both flash chromatography and precipitation procedures as for KR216,h aving the same purity grade in order to achieve am ore accurate comparison. All synthetic procedures and cost estimation are reported in the Supporting Information.…”

The researcher's guide to solid-state dye-sensitized solar cells

“…A second comparison can be made between the work of Degbia et al and that of Bui et al, as they both reported devices fabricated with the same dye and hole conductor, named 1 255 and 2a, 256 respectively. This compound is similar to 3b and X19 but it features an ethyl group attached to the nitrogen of the carbazole instead of a p-methoxyphenyl one.…”