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. 2017 Aug 30;3(8):e1701293. doi: 10.1126/sciadv.1701293

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Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.

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Fig. 3 — (A) Cross-sectional SEM image of a completed device. (B) J-V curves of the solar cells using the perovskite absorbers with various amounts of en addition. (C) Aging test on the unencapsulated solar cells with and without 10% en under constant AM1.5G (air mass 1.5 global) illumination in ambient air.