Spiro-MeOTAD

Description

Spiro-OMeTAD (Spiro-MeOTAD) is one of the most studied and suitable hole transport layer materials (HTL) due to its facile implementation and high performance in organic-inorganic electronic devices. The spiro-linked molecule provides high glass transition temperature (Tg), morphological stability and easy processability while maintaining good electronic properties. Spiro-MeOTAD has been widely used in solid-state dye-sensitised solar cells (ssDSSC), organic light-emitting dioes (OLED), perovskite solar cells (PSCs) and polymer based organic solar cells (OSCs).

Description

Spiro-OMeTAD1, aka spiro-MeOTAD, is a heavily substituted spirobifluorene derivative that first appeared in the chemical literature in 1998. It was synthesized and characterized by a team led by Donald Lupo at Hoechst Research & Technology (Frankfurt, Germany), Josef Salbeck at the Max Planck Institute for Polymer Research (Mainz, Germany), Michael Gr?tzel at the Swiss Federal Institute of Technology (Lausanne), and their co-workers.
Patents awarded to these researchers in 1998 claimed uses for spiro-OMeTAD in solar (photovoltaic) cells and radiation detectors. In an article from the same year, Gr?tzel et al. reported a dye-sensitized heterojunction of titanium dioxide with spiro-OMeTAD, which they described as an “amorphous organic hole-transport material”. A solar cell based on the heterojunction converted photons to electric current in 33% yield—very impressive for that time.
In 2016, Dong Shi, Yuan Li, and coauthors at King Abdullah University of Science and Technology (Thuwal, Saudi Arabia), the Chinese Academy of Sciences (Beijing), and Shanghai Jiao Tong University reported the growth of single crystals of spiro-OMeTAD, in contrast to the amorphous material previously used to form thin films. The charge-carrier transport mobilities of the single-crystal devices were 3 orders of magnitude greater than those that had been achieved by their thin-film counterparts.
Research on the hole-transport properties of spiro-OMeTAD, particularly in perovskite-based solar cells, continues to flourish. More than 550 articles and patents in this field have appeared in 2022 to date.
1. SciFinder: 9,9′-spirobi[9H-fluorene]-2,2′,7,7′-tetramine, N2,N2,N2′,N2′,N7,N7,N7′,N7′-octakis(4-methoxyphenyl)-

Chemical properties

2,2',7,7'-Tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene is Light Grey Solid

The Uses of Spiro-MeOTAD

2,2',7,7'-Tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene is suitable for use as charge-transfer materials, especial for photovoltaic cells, and as electroluminescent materials.

The Uses of Spiro-MeOTAD

suzuki reaction

The Uses of Spiro-MeOTAD

Spirobifluorene derivatives are suitable for use as charge-transfer materials, for photovoltaic cells, also as electroluminescent materials.

What are the applications of Application

2,2′,7,7′-Tetrakis-(N,N-di-4-methoxyphenylamino)-9,9′-spirobifluorene is a spirobifluorene derivative

General Description

SHT-263 Solarpur^? is an organic spiro molecule that is used as a hole transporting material (HTM). Its properties include high stability, good solubility, and an amorphous structure. It is majorly used in the fabrication of high-performance solar cells.