TY - JOUR
T1 - Decoupling the effects of defects on efficiency and stability through phosphonates in stable halide perovskite solar cells
AU - Xie, Haibing
AU - Wang, Zaiwei
AU - Chen, Zehua
AU - Pereyra, Carlos
AU - Pols, Mike
AU - Gałkowski, Krzysztof
AU - Anaya, Miguel
AU - Fu, Shuai
AU - Jia, Xiaoyu
AU - Tang, PengYi
AU - Kubicki, Dominik Józef
AU - Agarwalla, Anand
AU - Kim, Hui-Seon
AU - Prochowicz, Daniel
AU - Borrisé, Xavier
AU - Bonn, Mischa
AU - Bao, Chunxiong
AU - Sun, Xiaoxiao
AU - Zakeeruddin, Shaik Mohammed
AU - Emsley, Lyndon
AU - Arbiol i Cobos, Jordi
AU - Gao, Feng
AU - Fu, Fan
AU - Wang, Hai I.
AU - Tielrooij, Klaas-Jan
AU - Stranks, Samuel D.
AU - Tao, Shuxia
AU - Grätzel, Michael
AU - Hagfeldt, Anders
AU - Lira-Cantu, Monica
PY - 2021
Y1 - 2021
N2 - Understanding defects is of paramount importance for the development of stable halide perovskite solar cells (PSCs). However, isolating their distinctive effects on device efficiency and stability is currently a challenge. We report that adding the organic molecule 3-phosphonopropionic acid (H3pp) to the halide perovskite results in unchanged overall optoelectronic performance while having a tremendous effect on device stability. We obtained PSCs with ∼21% efficiency that retain ∼100% of the initial efficiency after 1,000 h at the maximum power point under simulated AM1.5G illumination. The strong interaction between the perovskite and the H3pp molecule through two types of hydrogen bonds (HI and OH) leads to shallow point defect passivation that has a significant effect on device stability but not on the non-radiative recombination and device efficiency. We expect that our work will have important implications for the current understanding and advancement of operational PSCs.
AB - Understanding defects is of paramount importance for the development of stable halide perovskite solar cells (PSCs). However, isolating their distinctive effects on device efficiency and stability is currently a challenge. We report that adding the organic molecule 3-phosphonopropionic acid (H3pp) to the halide perovskite results in unchanged overall optoelectronic performance while having a tremendous effect on device stability. We obtained PSCs with ∼21% efficiency that retain ∼100% of the initial efficiency after 1,000 h at the maximum power point under simulated AM1.5G illumination. The strong interaction between the perovskite and the H3pp molecule through two types of hydrogen bonds (HI and OH) leads to shallow point defect passivation that has a significant effect on device stability but not on the non-radiative recombination and device efficiency. We expect that our work will have important implications for the current understanding and advancement of operational PSCs.
KW - Perovskite solar cells
KW - Performance
KW - Stability
KW - Additive engineering
KW - Defect passivation
KW - Shallow point defects
KW - Deep point defects
KW - Phosphonates
UR - https://www.scopus.com/pages/publications/85105731647
U2 - 10.1016/j.joule.2021.04.003
DO - 10.1016/j.joule.2021.04.003
M3 - Article
SN - 2542-4351
VL - 5
SP - 1246
EP - 1266
JO - Joule
JF - Joule
IS - 5
ER -