Extending the environmental lifetime of unpackaged perovskite solar cells through interfacial design

Journal article
(Original article)


Publication Details

Author(s): Chen H, Hou Y, Halbig CE, Chen S, Zhang H, Li N, Guo F, Tang X, Gasparini N, Levchuk I, Kahmann S, Ramírez Quiroz CO, Osvet A, Eigler S, Brabec C
Journal: Journal of Materials Chemistry A
Publication year: 2016
Volume: 4
Journal issue: 30
Pages range: 11604-11610
ISSN: 2050-7488
eISSN: 2050-7496
Language: English


Abstract


Solution-processed oxo-functionalized graphene (oxo-G) is employed to substitute hydrophilic PEDOT:PSS as an anode interfacial layer for perovskite solar cells. The resulting devices exhibit a reasonably high power conversion efficiency (PCE) of 15.2% in the planar inverted architecture with oxo-G as a hole transporting material (HTM), and most importantly, deploy the full open-circuit voltage (V) of up to 1.1 V. Moreover, oxo-G effectively slows down the ingress of water vapor into the device stack resulting in significantly enhanced environmental stability of unpackaged cells under illumination with 80% of the initial PCE being reached after 500 h. Without encapsulation, ∼60% of the initial PCE is retained after ∼1000 h of light soaking under 0.5 sun and ambient conditions maintaining the temperature beneath 30 °C. Moreover, the unsealed perovskite device retains 92% of its initial PCE after about 1900 h under ambient conditions and in the dark. Our results underpin that controlling water diffusion into perovskite cells through advanced interface engineering is a crucial step towards prolonged environmental stability.



FAU Authors / FAU Editors

Brabec, Christoph Prof. Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)
Chen, Shi
Institute Materials for Electronics and Energy Technology (i-MEET)
Chen, Haiwei
Institute Materials for Electronics and Energy Technology (i-MEET)
Eigler, Siegfried Prof. Dr.
Lehrstuhl für Organische Chemie II
Gasparini, Nicola
Institute Materials for Electronics and Energy Technology (i-MEET)
Guo, Fei
Institute Materials for Electronics and Energy Technology (i-MEET)
Halbig, Christian Eberhard
Lehrstuhl für Organische Chemie II
Hou, Yi
Institute Materials for Electronics and Energy Technology (i-MEET)
Kahmann, Simon
Institute Materials for Electronics and Energy Technology (i-MEET)
Levchuk, Ievgen
Institute Materials for Electronics and Energy Technology (i-MEET)
Li, Ning Dr.-Ing.
Institute Materials for Electronics and Energy Technology (i-MEET)
Osvet, Andres Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)
Ramírez Quiroz, César Omar
Institute Materials for Electronics and Energy Technology (i-MEET)
Tang, Xiaofeng
Institute Materials for Electronics and Energy Technology (i-MEET)
Zhang, Hong
Institute Materials for Electronics and Energy Technology (i-MEET)


Additional Organisation
Graduiertenkolleg 1896/2 In situ Mikroskopie mit Elektronen, Röntgenstrahlen und Rastersonden
Exzellenz-Cluster Engineering of Advanced Materials
Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)


Research Fields

B Nanoelectronic Materials
Exzellenz-Cluster Engineering of Advanced Materials


How to cite

APA:
Chen, H., Hou, Y., Halbig, C.E., Chen, S., Zhang, H., Li, N.,... Brabec, C. (2016). Extending the environmental lifetime of unpackaged perovskite solar cells through interfacial design. Journal of Materials Chemistry A, 4(30), 11604-11610. https://dx.doi.org/10.1039/c6ta03755k

MLA:
Chen, Haiwei, et al. "Extending the environmental lifetime of unpackaged perovskite solar cells through interfacial design." Journal of Materials Chemistry A 4.30 (2016): 11604-11610.

BibTeX: 

Last updated on 2019-21-06 at 09:03