Circumventing UV Light Induced Nanomorphology Disorder to Achieve Long Lifetime PTB7‐Th:PCBM Based Solar Cells
Abstract
Abstract Large area flexible electronics rely on organic or hybrid materials prone to degradation limiting the device lifetime. For many years, photo‐oxidation has been thought to be one of the major degradation pathways. However, intense illumination may lead to a burn‐in or a rapid decrease in performance for devices completely isolated from corrosive elements as oxygen or moisture. The experimental studies which are presented in here indicate that a plausible triggering for the burn‐in is a spin flip after a UV photon absorption leading to the accumulation of electrostatic potential energy that initiates a rapid destruction of the nanomorpholgy in the fullerene phase of a polymer cell. To circumvent this and achieve highly stable and efficient devices, a robust nanocrystalline ordering is induced in the PCBM phase prior to UV illumination. In that event, PTB7‐Th:PC 71 BM cells are shown to exhibit T 80 lifetimes larger than 1.6 years under a continuous UV‐filtered 1‐sun illumination, equivalent to 7 years for sunlight harvesting at optimal orientation and 10 years for vertical applications.
- Authors:
-
- ICFO‐Institut de Ciencies Fotoniques The Barcelona Institute of Science and Technology 08860 Castelldefels (Barcelona) Spain
- Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA, Department of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 P. R. China
- Department of Polymer Science and Engineering University of Massachusetts Amherst MA 01003 USA
- ICFO‐Institut de Ciencies Fotoniques The Barcelona Institute of Science and Technology 08860 Castelldefels (Barcelona) Spain, Departament de Física Universitat Politècnica de Catalunya 08222 Terrassa Spain
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1401310
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Advanced Energy Materials
- Additional Journal Information:
- Journal Name: Advanced Energy Materials Journal Volume: 7 Journal Issue: 21; Journal ID: ISSN 1614-6832
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
Citation Formats
Liu, Quan, Toudert, Johann, Liu, Feng, Mantilla‐Perez, Paola, Bajo, Miguel Montes, Russell, Thomas P., and Martorell, Jordi. Circumventing UV Light Induced Nanomorphology Disorder to Achieve Long Lifetime PTB7‐Th:PCBM Based Solar Cells. Germany: N. p., 2017.
Web. doi:10.1002/aenm.201701201.
Liu, Quan, Toudert, Johann, Liu, Feng, Mantilla‐Perez, Paola, Bajo, Miguel Montes, Russell, Thomas P., & Martorell, Jordi. Circumventing UV Light Induced Nanomorphology Disorder to Achieve Long Lifetime PTB7‐Th:PCBM Based Solar Cells. Germany. https://doi.org/10.1002/aenm.201701201
Liu, Quan, Toudert, Johann, Liu, Feng, Mantilla‐Perez, Paola, Bajo, Miguel Montes, Russell, Thomas P., and Martorell, Jordi. Mon .
"Circumventing UV Light Induced Nanomorphology Disorder to Achieve Long Lifetime PTB7‐Th:PCBM Based Solar Cells". Germany. https://doi.org/10.1002/aenm.201701201.
@article{osti_1401310,
title = {Circumventing UV Light Induced Nanomorphology Disorder to Achieve Long Lifetime PTB7‐Th:PCBM Based Solar Cells},
author = {Liu, Quan and Toudert, Johann and Liu, Feng and Mantilla‐Perez, Paola and Bajo, Miguel Montes and Russell, Thomas P. and Martorell, Jordi},
abstractNote = {Abstract Large area flexible electronics rely on organic or hybrid materials prone to degradation limiting the device lifetime. For many years, photo‐oxidation has been thought to be one of the major degradation pathways. However, intense illumination may lead to a burn‐in or a rapid decrease in performance for devices completely isolated from corrosive elements as oxygen or moisture. The experimental studies which are presented in here indicate that a plausible triggering for the burn‐in is a spin flip after a UV photon absorption leading to the accumulation of electrostatic potential energy that initiates a rapid destruction of the nanomorpholgy in the fullerene phase of a polymer cell. To circumvent this and achieve highly stable and efficient devices, a robust nanocrystalline ordering is induced in the PCBM phase prior to UV illumination. In that event, PTB7‐Th:PC 71 BM cells are shown to exhibit T 80 lifetimes larger than 1.6 years under a continuous UV‐filtered 1‐sun illumination, equivalent to 7 years for sunlight harvesting at optimal orientation and 10 years for vertical applications.},
doi = {10.1002/aenm.201701201},
journal = {Advanced Energy Materials},
number = 21,
volume = 7,
place = {Germany},
year = {Mon Jul 17 00:00:00 EDT 2017},
month = {Mon Jul 17 00:00:00 EDT 2017}
}
https://doi.org/10.1002/aenm.201701201
Web of Science
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