Quantum efficiency and fission rate in tetracene

Using singlet fission in a photovoltaic cell, the theoretical energy conversion efficiency limit is larger than the Shockley-Queisser limit due to two excitons produced with one incident photon. In a singlet fission material, an absorbed photon excites a singlet exciton and then split into two triplet excitons with energy around half of the singlet exciton. Tetracene is a potential candidate for singlet fission photovoltaic cells. Tetracene has triplet exciton energy around 1.2 electron volts (eV), which matches with silicon band gap (1.1 eV). In this study, the quantum efficiency of tetracene devices are measured. Secondly, we will build a kinetic model to calculate the triplet yield rate from magnetic field effect. By modeling and experimental data, we will show that tetracene is an efficient fission material.

Department dc:contributor.department

Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2013

Author dc:creator

• Wu, Tony Chang-Chi

Advisor dc:contributor.advisor

• Marc A. Baldo.

• Electrical Engineering and Computer Science.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/82360

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/82360