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 (2016)
Publication Language: English
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2016
Book Volume: 4
Pages Range: 11604-11610
Journal Issue: 30
DOI: 10.1039/c6ta03755k
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.
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://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.
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