Double-Side-Passivated Perovskite Solar Cells with Ultra-low Potential Loss

Journal article

Publication Details

Author(s): Zhao Y, Li Q, Zhou W, Hou Y, Zhao Y, Fu R, Yu D, Liu X, Zhao Q
Journal: Solar RRL
Publication year: 2019
Volume: 3
Journal issue: 2
ISSN: 2367-198X


An ideal crystal quality in the grain interior of perovskite polycrystalline films is well recognized; therefore, understanding interfacial impact and the ways to limit interfacial recombination is critical to fabricating highly efficient solar cells. In perovskite solar cells, PbI2 has been used to passivate defects at grain boundaries, yet a systematic PbI2 passivation engineering to boost the high-performance perovskite solar cells has not been fully explored. Here, a novel device structure comprised of double-side-passivated perovskite solar cells (DSPC) is devised through intentionally distributing PbI2 to both the front/rear-side surfaces and grain boundaries of the formamidinium-lead-iodide-based (FAPbI(3)-based) perovskite film. The minority carrier lifetime in double-side-passivated perovskite is extended to 1.1s with single-exponential decay using time-resolved photoluminescence. This result indicates a generic passivation effect of PbI2 on perovskite interfaces, resembling SiO2 passivation in silicon solar cells. Correspondingly, the best photovoltaic device with TiO2-based planar structure presents a stabilized efficiency of 22%. Moreover, DSPC effectively boosts the limits of open circuit voltages toward a record potential loss of 0.38V for 1.53eV-bandgap perovskites. The architecture of double-side-passivated perovskite opens up new opportunities to exceed the efficiency of state-of-the-art perovskite solar cells.

FAU Authors / FAU Editors

Hou, Yi
Institute Materials for Electronics and Energy Technology (i-MEET)

External institutions with authors

Global Energy Interconnection Development and Cooperation Organization (GEIDCO)
Peking University (PKU) / 北京大学

How to cite

Zhao, Y., Li, Q., Zhou, W., Hou, Y., Zhao, Y., Fu, R.,... Zhao, Q. (2019). Double-Side-Passivated Perovskite Solar Cells with Ultra-low Potential Loss. Solar RRL, 3(2).

Zhao, Yicheng, et al. "Double-Side-Passivated Perovskite Solar Cells with Ultra-low Potential Loss." Solar RRL 3.2 (2019).


Last updated on 2019-12-03 at 02:08