Journal article
Enhanced photovoltage for inverted planar heterojunction perovskite solar cells
- Abstract:
- The highest power conversion efficiencies (PCEs) reported for perovskite solar cells (PSCs) with inverted planar structures are still inferior to those of PSCs with regular structures, mainly because of lower open-circuit voltages (Voc). Here we report a strategy to reduce nonradiative recombination for the inverted devices, based on a simple solution-processed secondary growth technique. This approach produces a wider bandgap top layer and a more n-type perovskite film, which mitigates nonradiative recombination, leading to an increase in Voc by up to 100 millivolts. We achieved a high Voc of 1.21 volts without sacrificing photocurrent, corresponding to a voltage deficit of 0.41 volts at a bandgap of 1.62 electron volts. This improvement led to a stabilized power output approaching 21% at the maximum power point.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
Actions
Access Document
- Files:
-
-
(Preview, Accepted manuscript, pdf, 3.4MB, Terms of use)
-
- Publisher copy:
- 10.1126/science.aap9282
Authors
- Publisher:
- American Association for the Advancement of Science
- Journal:
- Science More from this journal
- Volume:
- 360
- Issue:
- 6396
- Pages:
- 1442-1446
- Publication date:
- 2018-06-29
- Acceptance date:
- 2018-05-02
- DOI:
- EISSN:
-
1095-9203
- ISSN:
-
0036-8075
- Pmid:
-
29954975
- Language:
-
English
- Keywords:
- Pubs id:
-
pubs:862158
- UUID:
-
uuid:fdd18b62-0058-46b8-bc33-2d9cb82cc530
- Local pid:
-
pubs:862158
- Source identifiers:
-
862158
- Deposit date:
-
2018-07-03
Terms of use
- Copyright holder:
- Wang et al
- Copyright date:
- 2018
- Notes:
- Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works http://www.sciencemag.org/about/science-licenses-journal-article-reuse This is an article distributed under the terms of the Science Journals Default License. This is the accepted manuscript version of the article. The final version is available online from American Association for the Advancement of Science at: https://doi.org/10.1126/science.aap9282
If you are the owner of this record, you can report an update to it here: Report update to this record