TY - JOUR
T1 - Tautomeric Passivation Strategy-Assisted Photostable Perovskite Solar Modules
AU - Wang, Yang
AU - Yang, Hua
AU - Zhang, Kun
AU - Tao, Mingquan
AU - Li, Mingzhu
AU - Song, Yanlin
PY - 2022/10/14
Y1 - 2022/10/14
N2 - Defects weaken the stability of perovskite solar modules (PSMs) and aggravate the photodegradation process under continuous illumination (especially, UV light), limiting the competitiveness and commercial development of perovskite photovoltaics. Herein, we propose a tautomeric passivation strategy toward molecular isomerism passivation, 2,3-Bis(2,4,5-trimethyl-3-thienyl) maleimide (DAE), to assist defect passivation for photostable PSMs with sustainable UV protection. The tautomeric DAE molecule in the perovskite film after UV irradiation presents high charge density difference values (-0.182e for -C=O-Pb; 0.015e for N-H···I-) and efficiently improves the defect formation energy, preventing perovskite UV degradation through the free closed and open rings of the DAE molecule in the PSM. The DAE PSCs exhibit champion efficiencies up to 24.12% (small area: 0.08 cm2) and 18.47% (module area: 25 cm2) as well as long-term UV photostability, continuously charging a mobile phone through a DAE-PSM even on a cloudy day.
AB - Defects weaken the stability of perovskite solar modules (PSMs) and aggravate the photodegradation process under continuous illumination (especially, UV light), limiting the competitiveness and commercial development of perovskite photovoltaics. Herein, we propose a tautomeric passivation strategy toward molecular isomerism passivation, 2,3-Bis(2,4,5-trimethyl-3-thienyl) maleimide (DAE), to assist defect passivation for photostable PSMs with sustainable UV protection. The tautomeric DAE molecule in the perovskite film after UV irradiation presents high charge density difference values (-0.182e for -C=O-Pb; 0.015e for N-H···I-) and efficiently improves the defect formation energy, preventing perovskite UV degradation through the free closed and open rings of the DAE molecule in the PSM. The DAE PSCs exhibit champion efficiencies up to 24.12% (small area: 0.08 cm2) and 18.47% (module area: 25 cm2) as well as long-term UV photostability, continuously charging a mobile phone through a DAE-PSM even on a cloudy day.
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U2 - 10.1021/acsenergylett.2c01648
DO - 10.1021/acsenergylett.2c01648
M3 - RGC 21 - Publication in refereed journal
SN - 2380-8195
VL - 7
SP - 3646
EP - 3652
JO - ACS Energy Letters
JF - ACS Energy Letters
IS - 10
ER -
