Photocurrent-Detected 2D Electronic Spectroscopy Reveals Ultrafast Hole Transfer in Operating PM6/Y6 Organic Solar Cells

Ultrafast 2D IR vibrational echo spectroscopy.

The experimental technique and applications of ultrafast two-dimensional infrared (2D IR) vibrational echo spectroscopy are presented. Using ultrashort infrared pulses and optical heterodyne detection to provide phase information, unique information can be obtained about the dynamics, interactions, and structures of molecular systems. The form and time evolution of the 2D IR spectrum permits ex...

Contribution from a hole-conducting dye to the photocurrent in solid-state dye-sensitized solar cells.

The hole transporting medium in solid-state dye-sensitized solar cells can be utilized to harvest sunlight. Herein we demonstrate that a triphenylamine-based dye, used as hole-transporting medium, contributes to the photocurrent in a squaraine-sensitized solid-state dye-sensitized solar cell. Steady-state photoluminescence measurements have been used to distinguish between electron transfer and...

Solution-processed solar cells based on inorganic bulk heterojunctions with evident hole contribution to photocurrent generation.

To develop solution-processed and novel device structures is of great importance for achieving advanced and low-cost solar cells. In this paper, we report the solution-processed solar cells based on inorganic bulk heterojunctions (BHJs) featuring a bulk crystalline Sb2S3 absorbing layer interdigitated with a TiO2 nanoarray as an electron transporter. A solution-processed amorphous-to-crystallin...

Transient photocurrent measurements on Polymer Solar Cells

Organic solar cells made of polymers are an attractive alternative to the conventional solar cells which are commercially used today. The polymer solar cell is cheap to produce, due to the high absorption coefficients which limits the needed thickness of the material and due to the simple manufacturing process, which doesn’t demand high temperatures. However, the efficiencies of polymer solar c...

Analytical and numerical study of photocurrent transients in organic polymer solar cells