Sigma-Aldrich SPIRO-TTB >=99% (HPLC)

Spiro-TTB is a high-mobility organic semiconductor with strong donor character given its four substituted arylamine moieties that stabilize positively charged cationic states via mesomeric effects[1].
It has been successfully applied as transparent hole-transparent layer in solar cells[2][3], organic field-effect transistors (OFETs)[4][5][6], and organic light emitting devices (OLEDs)[1]. In photovoltaics, spiro-TTB was used as organic hole selective layer between perovskite and the silicon cells, contributing to a 25.2% efficency perovskite/ silicon tandem solar cell[3]. When used in OLEDs, spiro-TTB enabled applications in organic photodetectors (OPDs)[4], imaging[5][7] and lasing applications[6].

Spiro-TTB is used as a hole transport material in OLED devices, organic photovoltaics (OPVs), organic field-effect transistors (OFETs) and perovskite solar cells. It exhibits excellent hole injection and transport properties, enabling efficient