absorption spectrometer helios  (Ultrafast Systems LLC)

Journal: Nature Communications

Article Title: Achieving a solar-to-chemical efficiency of 3.6% in ambient conditions by inhibiting interlayer charges transport

doi: 10.1038/s41467-024-49373-z

Figure Lengend Snippet: a , b Femtosecond TA spectra in the 800–1200 nm range of TPC-3D under ( a ) air and ( b ) O 2 atmosphere. c Comparison of TA kinetic profiles at 1000 nm under air and O 2 conditions, respectively. d Decay lifetimes under O 2 and air conditions fitted by the tri-exponential function from corresponding TA kinetic traces at 1000 nm.

Article Snippet: TA spectra of TPC-3D, PYR-2D, and TPL-2D w ere measured on a Helios femtosecond transient absorption spectrometer (Helios Fire, Ultrafast Systems, LLC).

Techniques: Comparison

Journal: Nature Communications

Article Title: Achieving a solar-to-chemical efficiency of 3.6% in ambient conditions by inhibiting interlayer charges transport

doi: 10.1038/s41467-024-49373-z

Figure Lengend Snippet: a – b , Femtosecond TA spectra in 450–780 nm range of TPC-3D under ( a ) air and ( b ) O 2 atmosphere. c TA kinetic profiles of TPC-3D at 515 nm and 645 nm. TPC-3D exhibited a positive peak consistent with its electron donor monomers (TPC) at ~515 nm, defined as the signal of excitons (Supplementary Fig. ). For TPC-3D, the excitons peak at ~515 nm was followed by a positive peak at 645 nm (Supplementary Fig. ), attributed to polarons, and the time delay between them was the time for excitons to transfer to polarons, i.e. 630 fs. d Comparsion of TA kinetic profiles at 645 nm under air and O 2 condition, respectively. e Decay lifetimes under O 2 and air conditions fitted by the tri-exponential function from corresponding TA kinetic traces at 645 nm.

Article Snippet: TA spectra of TPC-3D, PYR-2D, and TPL-2D w ere measured on a Helios femtosecond transient absorption spectrometer (Helios Fire, Ultrafast Systems, LLC).

Techniques: