|
|
|
|
| LEADER |
01000naa a22002652 4500 |
| 001 |
NLM318656353 |
| 003 |
DE-627 |
| 005 |
20231225165816.0 |
| 007 |
cr uuu---uuuuu |
| 008 |
231225s2021 xx |||||o 00| ||eng c |
| 024 |
7 |
|
|a 10.1002/adma.202006170
|2 doi
|
| 028 |
5 |
2 |
|a pubmed24n1062.xml
|
| 035 |
|
|
|a (DE-627)NLM318656353
|
| 035 |
|
|
|a (NLM)33300231
|
| 040 |
|
|
|a DE-627
|b ger
|c DE-627
|e rakwb
|
| 041 |
|
|
|a eng
|
| 100 |
1 |
|
|a Cheng, Yuanhang
|e verfasserin
|4 aut
|
| 245 |
1 |
0 |
|a Revealing the Degradation and Self-Healing Mechanisms in Perovskite Solar Cells by Sub-Bandgap External Quantum Efficiency Spectroscopy
|
| 264 |
|
1 |
|c 2021
|
| 336 |
|
|
|a Text
|b txt
|2 rdacontent
|
| 337 |
|
|
|a ƒaComputermedien
|b c
|2 rdamedia
|
| 338 |
|
|
|a ƒa Online-Ressource
|b cr
|2 rdacarrier
|
| 500 |
|
|
|a Date Revised 22.02.2021
|
| 500 |
|
|
|a published: Print-Electronic
|
| 500 |
|
|
|a Citation Status PubMed-not-MEDLINE
|
| 520 |
|
|
|a © 2020 Wiley-VCH GmbH.
|
| 520 |
|
|
|a Ion dissociation has been identified to determine the intrinsic stability of perovskite solar cells (PVSCs), but the underlying degradation mechanism is still elusive. Herein, by combining highly sensitive sub-bandgap external quantum efficiency (s-EQE) spectroscopy, impedance analysis, and theoretical calculations, the evolution of defect states in PVSCs during the degradation can be monitored. It is found that the degradation of PVSCs can be divided into three steps: 1) dissociation of ions from perovskite lattices, 2) migration of dissociated ions, and 3) consumption of I- by reacting with metal electrode. Importantly, step (3) is found to be crucial as it will accelerate the first two steps and lead to continuous degradation. By replacing the metal with more chemically robust indium tin oxide (ITO), it is found that the dissociated ions under light soaking will only saturate at the perovskite/ITO interface. Importantly, the dissociated ions will subsequently restore to the corresponding vacancies under dark condition to heal the perovskite and photovoltaic performance. Such shuttling of mobile ions without consumption in the ITO-contact PVSCs results in harvesting-rest-recovery cycles in natural day/night operation. It is envisioned that the mechanism of the intrinsic perovskite material degradation reported here will lead to clearer research directions toward highly stable PVSCs
|
| 650 |
|
4 |
|a Journal Article
|
| 650 |
|
4 |
|a degradation
|
| 650 |
|
4 |
|a indium tin oxide contact
|
| 650 |
|
4 |
|a ion consumption
|
| 650 |
|
4 |
|a ion dissociation
|
| 650 |
|
4 |
|a perovskite solar cells
|
| 650 |
|
4 |
|a self-healing
|
| 650 |
|
4 |
|a sub-bandgap external quantum efficiency
|
| 700 |
1 |
|
|a Liu, Xixia
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Guan, Zhiqiang
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Li, Menglin
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Zeng, Zixin
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Li, Ho-Wa
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Tsang, Sai-Wing
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Aberle, Armin Gerhard
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Lin, Fen
|e verfasserin
|4 aut
|
| 773 |
0 |
8 |
|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 33(2021), 3 vom: 22. Jan., Seite e2006170
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
|
| 773 |
1 |
8 |
|g volume:33
|g year:2021
|g number:3
|g day:22
|g month:01
|g pages:e2006170
|
| 856 |
4 |
0 |
|u http://dx.doi.org/10.1002/adma.202006170
|3 Volltext
|
| 912 |
|
|
|a GBV_USEFLAG_A
|
| 912 |
|
|
|a SYSFLAG_A
|
| 912 |
|
|
|a GBV_NLM
|
| 912 |
|
|
|a GBV_ILN_350
|
| 951 |
|
|
|a AR
|
| 952 |
|
|
|d 33
|j 2021
|e 3
|b 22
|c 01
|h e2006170
|