Chen, N., X. Yi, J. Zhuang, Y. Wei, Y. Zhang, F. Wang, S. Cao, C. Li, and J. Wang. “An Efficient Trap Passivator for Perovskite Solar Cells: Poly(propylene Glycol) bis(2-Aminopropyl Ether)”. Nano-Micro Letters, vol. 12, Aug. 2020, p. 177, doi:10.1007/s40820-020-00517-y.