Quantifying singlet fission in novel organic materials using nonlinear optics

Erik Busby; Jianlong Xia; Omer Yaffe; Bharat Kumar; Timothy Berkelbach; Qin Wu; John Miller; Colin Nuckolls; Xiaoyang Zhu; David Reichman; Luis Campos; Matthew Y. Sfeir

doi:10.1117/12.2061831

7 October 2014 Quantifying singlet fission in novel organic materials using nonlinear optics

Erik Busby, Jianlong Xia, Omer Yaffe, Bharat Kumar, Timothy Berkelbach, Qin Wu, John Miller, Colin Nuckolls, Xiaoyang Zhu, David Reichman, Luis Campos, Matthew Y. Sfeir

Author Affiliations +

Proceedings Volume 9181, Light Manipulating Organic Materials and Devices; 91810A (2014) https://doi.org/10.1117/12.2061831
Event: SPIE Organic Photonics + Electronics, 2014, San Diego, California, United States

Abstract

Singlet fission is a form of multiple exciton generation in which two triplet excitons are produced from the decay of a photoexcited singlet exciton. In a small number of organic materials, most notably pentacene, this conversion process has been shown to occur with unity quantum yield on sub-ps timescales. However, a poorly understood mechanism for fission along with strict energy and geometry requirements have so far limited the observation of this process to a few classes of organic materials, with only a subset of these (most notably the polyacenes) showing both efficient fission and long-lived triplets. Here, we utilize novel organic materials to investigate how the efficiency of the fission process depends on the coupling and the energetic driving force between chromophores in both intra- and intermolecular singlet fission materials. We demonstrate how the triplet yield can be accurately quantified using a combination of traditional transient spectroscopies and recently developed excited state saturable absorption techniques. These results allow us to gain mechanistic insight into the fission process and suggest general strategies for generating new materials that can undergo efficient fission.

Citation Download Citation

Erik Busby, Jianlong Xia, Omer Yaffe, Bharat Kumar, Timothy Berkelbach, Qin Wu, John Miller, Colin Nuckolls, Xiaoyang Zhu, David Reichman, Luis Campos, and Matthew Y. Sfeir "Quantifying singlet fission in novel organic materials using nonlinear optics", Proc. SPIE 9181, Light Manipulating Organic Materials and Devices, 91810A (7 October 2014); https://doi.org/10.1117/12.2061831

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Absorption

Organic materials

Excitons

Picosecond phenomena

Polarization

Crystals

Nonlinear optics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years