Silicon solar cells are approaching their efficiency limit of 29% under the standard solar spectrum. In order to surpass this limit, a device is required that better manages the energy in each incoming energy packet (photon). One approach to this end is to split the energy of higher energy photons in two, such that two electron-hole pairs can be generated by one photon. This strategy has an upper limit of 45.9%. Organic Multiple Exciton Generation (OMEG) is executed by a photophysical process called singlet fission. A spin-0 (singlet) exciton is generated by a photon, and it decays into two spin-1 triplet excitons in a spin-conserving process. This talk will detail our progress towards developing OMEG augmented silicon solar cells (OMEGA-Si).
Layers of organic molecules are capable of generating multiple excitons per absorbed photon though a process known as singlet fission. As such, this process could be employed to fabricate a solar cell which circumvents the efficiency limits imposed by a single threshold design. Leveraging experience with silicon solar cells, the OMEGA Si project is developing a device that combines the maturity and high efficiency of crystalline silicon with the exciton multiplication afforded by singlet fission. This talk will communicate progress of the project including experiments to elucidate exciton and carrier transfer between the singlet fission layer and the underlying silicon solar cell.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
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.