Related Experiment Video
Updated: Aug 1, 2025

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity
Published on: March 6, 2017
Probing the excited state dynamics in perinone molecules for photovoltaic applications using transient absorption
Suman Dhami1, Yogesh Kumar1, Chaitrali Sengupta1
1Department of Chemistry, Indian Institute of Technology Roorkee, 247667 Haridwar, Uttarakhand, India. rpandey@cy.iitr.ac.in.
Abstract:
Nonfullerene polyaromatic molecules such as perinone are emerging as alternatives to fullerene derivatives due to their low manufacturing cost, ease of functionalization, and processing to improve the efficiency of optoelectronic devices. In this paper, we have used ultrafast transient absorption (TA) spectroscopy to probe the excited state dynamics in cis and trans perinone molecules. We have performed TA measurements in solution as well as thin films to provide a comprehensive understanding of excited-state processes occurring in cis and trans perinone molecules. Our results reveal the triplet state formation in perinone thin films through intersystem crossing and provide an in-depth understanding of the relaxation pathways of perinone molecules, which will be beneficial for designing and optimizing the device efficiencies of perinone based photovoltaic devices.
More Related Videos
Related Concept Videos
Photochemical Electrocyclic Reactions: Stereochemistry
Selection Rules: Photochemical Activation
UV–Vis Spectroscopy: Molecular Electronic Transitions
UV–Vis Spectroscopy of Conjugated Systems
One of the factors influencing λmax is the extent...
Thermal and Photochemical Electrocyclic Reactions: Overview
Molecular Spectroscopy: Absorption and Emission
Photoluminescence: Fluorescence and Phosphorescence
A pair of electrons in a...

