As the global demand for clean and sustainable energy continues to surge, the photovoltaic sector remains at the forefront of ...

Antimony selenosulfide (Sb2(S,Se)3) solar cells are emerging as a strong candidate for next-generation thin-film ...

Spiro-OMeTAD 1, 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 ...

Spiro-OMeTAD is an amorphous material, which gives it some unique properties. Most solid materials have well-defined electronic energy bands in which electrons and holes can move to transport ...

Undoped Spiro-OMeTAD devices also have lower hysteresis at very low-light levels and an open-circuit voltage of ≈0.65 V at 50 lux, thus making them more reliable in these conditions.

Researchers in China have proposed a new lithium-free doping strategy to fabricate spiro-OMeTAD-based hole transport layers (HTLs) for applications in perovskite solar cell. A PV device built with ...

The doping process is then initiated by exposing spiro-OMeTAD:LiTFSI blend films to air and light. Not only is this method time consuming, it largely depends on ambient conditions.

Spiro-OMeTAD is the most critical hole transport layer (HTL) material. To improve the charge transport ability of spiro-OMeTAD, lithium trifluoromethanesulfonyl imide (Li-TFSI) ...