Design Principles for Block Polymer Organic Double Heterojunction Solar Cells

Peer reviewed: 
Yes, item is peer reviewed.
Scholarly level: 
Faculty/Staff
Final version published as: 

Hutnan, M.P.J., and Kaake, L.G. (2016). Design principles for block polymer organic double heterojunction solar cells. Materials Horizons 3: 575-580. https://doi.org/10.1039/C6MH00293E

Date created: 
2016-09
Abstract: 

An organic double heterojunction photovoltaic device is described and the limits of its power conversion efficiency are investigated via numerical calculation. In the absence of exciton binding energy, fully conjugated block polymer devices exhibit power conversion efficiencies slightly exceeding the Shockley-Queissar limit. As exciton binding energy increases, a decrease in efficiency occurs, but remains over 20% for binding energies less than 0.5 eV. Further calculations show that devices require a high degrees of phase purity to leverage the full benefit of the double heterjunction structure. Synthetic targets are identified and their maximum efficiency is calculated based on experimentally measured energy levels, leading to a generalized structural motif.

Language: 
English
Document type: 
Article
Rights: 
Rights remain with the authors.
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Sponsor(s): 
Natural Sciences and Engineering Research Council of Canada (NSERC)
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