TY - JOUR
T1 - Development of a new hole transport material for perovskite solar cells
AU - Tumen-Ulzii, Ganbaatar
AU - Takekuma, Kotaro
AU - Fujita, Yuki
AU - Senba, Dai
AU - Senevirathne, Chathuranganie A.M.
AU - Lee, Yi Ting
AU - Wachi, Atsushi
AU - Sato, Hiroshi
AU - Matsushima, Toshinori
AU - Adachi, Chihaya
N1 - Publisher Copyright:
© 2023 Author(s).
PY - 2023/5/15
Y1 - 2023/5/15
N2 - N,N-di(4-methoxyphenyl)amino-9,9′-spirobifluorene (spiro-OMeTAD) is a widely used hole transport layer (HTL) material for emerging lead halide hybrid perovskite solar cells (PSCs). Finding alternative HTL materials is required for the future development of more efficient and stable PSCs. Here, we developed a new HTL material of N2,N2,N,7N7-tetrakis(4-methoxyphenyl)benzo[b]benzo[4,5]thieno[2,3-d]thiophene-2,7-diamine (TBTD). Chemically doped TBTD provided better hole extraction in PSCs than chemically doped spiro-OMeTAD due to higher electrical conductivity and a more suitable hole transport energy level. Thus, PSCs with the TBTD HTL showed higher power conversion efficiency (∼21%) than spiro-OMeTAD HTL (∼19%). The operational stability of TBTD-based PSCs was similar to that of spiro-OMeTAD-based PSCs. The findings discussed in this study will aid in the future development of high-performance PSCs.
AB - N,N-di(4-methoxyphenyl)amino-9,9′-spirobifluorene (spiro-OMeTAD) is a widely used hole transport layer (HTL) material for emerging lead halide hybrid perovskite solar cells (PSCs). Finding alternative HTL materials is required for the future development of more efficient and stable PSCs. Here, we developed a new HTL material of N2,N2,N,7N7-tetrakis(4-methoxyphenyl)benzo[b]benzo[4,5]thieno[2,3-d]thiophene-2,7-diamine (TBTD). Chemically doped TBTD provided better hole extraction in PSCs than chemically doped spiro-OMeTAD due to higher electrical conductivity and a more suitable hole transport energy level. Thus, PSCs with the TBTD HTL showed higher power conversion efficiency (∼21%) than spiro-OMeTAD HTL (∼19%). The operational stability of TBTD-based PSCs was similar to that of spiro-OMeTAD-based PSCs. The findings discussed in this study will aid in the future development of high-performance PSCs.
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U2 - 10.1063/5.0150066
DO - 10.1063/5.0150066
M3 - Article
AN - SCOPUS:85159850607
SN - 0003-6951
VL - 122
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 20
M1 - 201101
ER -