Charge transport modulation of a flexible quantum dot solar cell using a piezoelectric effect
Colloidal quantum dots are promising materials for flexible solar cells as they have a large absorption coefficient at visible and infrared wavelengths, a band gap that can be tuned across the solar spectrum, and compatibility with solution processing. However, the performance of flexible solar cell...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Journal article |
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Wiley-VCH
2017
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| _version_ | 1797105745065410560 |
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| author | Cho, Y Girand, P Hou, B Lee, Y Hong, J Lee, S Pak, S Lee, J Jang, J Morris, S Sohn, JI Cha, SN Kim, J |
| author_facet | Cho, Y Girand, P Hou, B Lee, Y Hong, J Lee, S Pak, S Lee, J Jang, J Morris, S Sohn, JI Cha, SN Kim, J |
| author_sort | Cho, Y |
| collection | OXFORD |
| description | Colloidal quantum dots are promising materials for flexible solar cells as they have a large absorption coefficient at visible and infrared wavelengths, a band gap that can be tuned across the solar spectrum, and compatibility with solution processing. However, the performance of flexible solar cells can be degraded by the loss of charge carriers due to recombination pathways that exist at a junction interface as well as the strained interface of the semiconducting layers. The modulation of the charge carrier transport by the piezoelectric effect is an effective way of resolving and improving the inherent material and structural defects. By inserting a porous piezoelectric P(VDF-TrFE) layer so as to generate a converging electric field, it is possible to modulate the junction properties and consequently enhance the charge carrier behavior at the junction. In this study, we show that due to a reduction in the recombination and an improvement in the carrier extraction, a 38% increase in the current density along with a concomitant increase of 37% in the power conversion efficiency of flexible quantum dots solar cells can be achieved by modulating the junction properties using the piezoelectric effect. |
| first_indexed | 2024-03-07T06:51:44Z |
| format | Journal article |
| id | oxford-uuid:fccad9b7-858a-4faf-82a4-26eb8b264d64 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T06:51:44Z |
| publishDate | 2017 |
| publisher | Wiley-VCH |
| record_format | dspace |
| spelling | oxford-uuid:fccad9b7-858a-4faf-82a4-26eb8b264d642022-03-27T13:23:41ZCharge transport modulation of a flexible quantum dot solar cell using a piezoelectric effect Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fccad9b7-858a-4faf-82a4-26eb8b264d64Symplectic Elements at OxfordWiley-VCH2017Cho, YGirand, PHou, BLee, YHong, JLee, SPak, SLee, JJang, JMorris, SSohn, JICha, SNKim, JColloidal quantum dots are promising materials for flexible solar cells as they have a large absorption coefficient at visible and infrared wavelengths, a band gap that can be tuned across the solar spectrum, and compatibility with solution processing. However, the performance of flexible solar cells can be degraded by the loss of charge carriers due to recombination pathways that exist at a junction interface as well as the strained interface of the semiconducting layers. The modulation of the charge carrier transport by the piezoelectric effect is an effective way of resolving and improving the inherent material and structural defects. By inserting a porous piezoelectric P(VDF-TrFE) layer so as to generate a converging electric field, it is possible to modulate the junction properties and consequently enhance the charge carrier behavior at the junction. In this study, we show that due to a reduction in the recombination and an improvement in the carrier extraction, a 38% increase in the current density along with a concomitant increase of 37% in the power conversion efficiency of flexible quantum dots solar cells can be achieved by modulating the junction properties using the piezoelectric effect. |
| spellingShingle | Cho, Y Girand, P Hou, B Lee, Y Hong, J Lee, S Pak, S Lee, J Jang, J Morris, S Sohn, JI Cha, SN Kim, J Charge transport modulation of a flexible quantum dot solar cell using a piezoelectric effect |
| title | Charge transport modulation of a flexible quantum dot solar cell using a piezoelectric effect
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| title_full | Charge transport modulation of a flexible quantum dot solar cell using a piezoelectric effect
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| title_fullStr | Charge transport modulation of a flexible quantum dot solar cell using a piezoelectric effect
|
| title_full_unstemmed | Charge transport modulation of a flexible quantum dot solar cell using a piezoelectric effect
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| title_short | Charge transport modulation of a flexible quantum dot solar cell using a piezoelectric effect
|
| title_sort | charge transport modulation of a flexible quantum dot solar cell using a piezoelectric effect |
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