TY - GEN
T1 - Effect of Composition and Microstructure on the Mechanical Stability of Perovskite Solar Cells
AU - Rolston, Nicholas
AU - Printz, Adam D.
AU - Tracy, Jared M.
AU - Dauskardt, Reinhold H.
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/11/26
Y1 - 2018/11/26
N2 - We report on recent studies characterizing the intrinsic mechanical integrity of perovskite compositions and fully explore the role of various cation combinations, additives, and microstructure on perovskite cohesion. Adding cations to the perovskite decreased mechanical integrity, largely due to smaller grain sizes and increased concentration of PbI 2 . Microindentation hardness testing was performed to estimate the fracture toughness of single-crystal perovskite, and the results indicated perovskites are inherently fragile, even in the absence of grain boundaries and defects. Introducing plastically deformable cations led to a modest improvement in cohesion, and the most robust architecture was observed by infusing perovskite into a porous TiO 2 /ZrO 2 /C layer that provided extrinsic reinforcement to mechanical and environmental stressors.
AB - We report on recent studies characterizing the intrinsic mechanical integrity of perovskite compositions and fully explore the role of various cation combinations, additives, and microstructure on perovskite cohesion. Adding cations to the perovskite decreased mechanical integrity, largely due to smaller grain sizes and increased concentration of PbI 2 . Microindentation hardness testing was performed to estimate the fracture toughness of single-crystal perovskite, and the results indicated perovskites are inherently fragile, even in the absence of grain boundaries and defects. Introducing plastically deformable cations led to a modest improvement in cohesion, and the most robust architecture was observed by infusing perovskite into a porous TiO 2 /ZrO 2 /C layer that provided extrinsic reinforcement to mechanical and environmental stressors.
KW - fracture
KW - mechanical stability
KW - module
KW - perovskite solar cell
KW - reliability
UR - http://www.scopus.com/inward/record.url?scp=85059888303&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85059888303&partnerID=8YFLogxK
U2 - 10.1109/PVSC.2018.8547641
DO - 10.1109/PVSC.2018.8547641
M3 - Conference contribution
AN - SCOPUS:85059888303
T3 - 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
SP - 3509
EP - 3513
BT - 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
Y2 - 10 June 2018 through 15 June 2018
ER -