TY - JOUR
T1 - Asymmetrically Substituted 10H,10′H-9,9′-Spirobi[acridine] Derivatives as Hole-Transporting Materials for Perovskite Solar Cells
AU - Xia, Jianxing
AU - Zhang, Yi
AU - Cavazzini, Marco
AU - Orlandi, Simonetta
AU - Ding, Bin
AU - Kanda, Hiroyuki
AU - Klipfel, Nadja
AU - Gao, Xiao-Xin
AU - Ul Ain, Qurat
AU - Jankauskas, Vygintas
AU - Rakstys, Kasparas
AU - Hu, Ruiyuan
AU - Qiu, Zeliang
AU - Asiri, Abdullah M.
AU - Kim, Hobeom
AU - Dyson, Paul J.
AU - Pozzi, Gianluca
AU - Khaja Nazeeruddin, Mohammad
PY - 2022/11/25
Y1 - 2022/11/25
N2 - Hole-transporting materials (HTMs) based on the 10H, 10′H-9,9′-spirobi [acridine] core (BSA50 and BSA51) were synthesized, and their electronic properties were explored. Experimental and theoretical studies show that the presence of rigid 3,6-dimethoxy-9H-carbazole moieties in BSA 50 brings about improved hole mobility and higher work function compared to bis(4-methoxyphenyl)amine units in BSA51, which increase interfacial hole transportation from perovskite to HTM. As a result, perovskite solar cells (PSCs) based on BSA50 boost power conversion efficiency (PCE) to 22.65 %, and a PSC module using BSA50 HTM exhibits a PCE of 21.35 % (6.5×7 cm) with a Voc of 8.761 V and FF of 79.1 %. The unencapsulated PSCs exhibit superior stability to devices employing spiro-OMeTAD, retaining nearly 90 % of their initial efficiency after 1000 h operation output. This work demonstrates the high potential of molecularly engineered spirobi[acridine] derivatives as HTMs as replacements for spiro-OMeTAD.
AB - Hole-transporting materials (HTMs) based on the 10H, 10′H-9,9′-spirobi [acridine] core (BSA50 and BSA51) were synthesized, and their electronic properties were explored. Experimental and theoretical studies show that the presence of rigid 3,6-dimethoxy-9H-carbazole moieties in BSA 50 brings about improved hole mobility and higher work function compared to bis(4-methoxyphenyl)amine units in BSA51, which increase interfacial hole transportation from perovskite to HTM. As a result, perovskite solar cells (PSCs) based on BSA50 boost power conversion efficiency (PCE) to 22.65 %, and a PSC module using BSA50 HTM exhibits a PCE of 21.35 % (6.5×7 cm) with a Voc of 8.761 V and FF of 79.1 %. The unencapsulated PSCs exhibit superior stability to devices employing spiro-OMeTAD, retaining nearly 90 % of their initial efficiency after 1000 h operation output. This work demonstrates the high potential of molecularly engineered spirobi[acridine] derivatives as HTMs as replacements for spiro-OMeTAD.
KW - 3,6-Dimethoxy-9H-Carbazole Acridine
KW - Bis(4-Methoxyphenyl)Amine Acridine
KW - Hole Transporting Materials
KW - Perovskite Solar Cells
KW - Perovskite Solar Modules
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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85141143335&origin=recordpage
U2 - 10.1002/anie.202212891
DO - 10.1002/anie.202212891
M3 - RGC 21 - Publication in refereed journal
SN - 1433-7851
VL - 61
JO - Angewandte Chemie (International Edition)
JF - Angewandte Chemie (International Edition)
IS - 48
M1 - e202212891
ER -
