TY - JOUR
T1 - Photoactivated p-Doping of Organic Interlayer Enables Efficient Perovskite/Silicon Tandem Solar Cells
AU - Zheng, Xiaopeng
AU - Liu, Jiang
AU - Liu, Tuo
AU - Aydin, Erkan
AU - Chen, Min
AU - Yan, Wenbo
AU - De Bastiani, Michele
AU - Allen, Thomas G.
AU - Yuan, Shuai
AU - Kirmani, Ahmad R.
AU - Baustert, Kyle N.
AU - Salvador, Michael F.
AU - Turedi, Bekir
AU - Alsalloum, Abdullah Y.
AU - Almasabi, Khulud
AU - Kotsovos, Konstantinos
AU - Gereige, Issam
AU - Liao, Liang Sheng
AU - Luther, Joseph M.
AU - Graham, Kenneth R.
AU - Mohammed, Omar F.
AU - De Wolf, Stefaan
AU - Bakr, Osman M.
N1 - Publisher Copyright:
© 2020 American Chemical Society.
PY - 2022/6/10
Y1 - 2022/6/10
N2 - Solution-processed organic semiconductor layers on rough surfaces tend to vary widely in thickness, significantly hindering charge extraction in relevant optoelectronic devices. Herein, we report the photoactivated p-doping of hole-transporting material (HTM) to enhance hole extraction for (textured) perovskite/silicon tandem solar cells, making the device performance less sensitive to the variation of hole transport layer thickness. We used the ionic compound 4-isopropyl-4′-methyldiphenyliodonium tetrakis(penta-fluorophenyl-borate) (DPITPFB) as a p-type dopant in poly(triaryl amine) (PTAA), which we used as the HTM. We observed that light soaking DPI-TPFB-doped PTAA shows approximately 22 times higher conductivity compared with an undoped PTAA film, which translated into an improved fill factor (FF) for tandem solar cells. Our tandem solar cells achieved an ∼80% FF and 27.8% efficiency and operated at their maximum power point for 200 h without loss of performance, in addition to retaining ∼83% of initial performance over a month of operation in an outdoor environment.
AB - Solution-processed organic semiconductor layers on rough surfaces tend to vary widely in thickness, significantly hindering charge extraction in relevant optoelectronic devices. Herein, we report the photoactivated p-doping of hole-transporting material (HTM) to enhance hole extraction for (textured) perovskite/silicon tandem solar cells, making the device performance less sensitive to the variation of hole transport layer thickness. We used the ionic compound 4-isopropyl-4′-methyldiphenyliodonium tetrakis(penta-fluorophenyl-borate) (DPITPFB) as a p-type dopant in poly(triaryl amine) (PTAA), which we used as the HTM. We observed that light soaking DPI-TPFB-doped PTAA shows approximately 22 times higher conductivity compared with an undoped PTAA film, which translated into an improved fill factor (FF) for tandem solar cells. Our tandem solar cells achieved an ∼80% FF and 27.8% efficiency and operated at their maximum power point for 200 h without loss of performance, in addition to retaining ∼83% of initial performance over a month of operation in an outdoor environment.
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U2 - 10.1021/acsenergylett.2c00780
DO - 10.1021/acsenergylett.2c00780
M3 - Article
AN - SCOPUS:85141578693
VL - 7
SP - 1987
EP - 1993
JO - ACS Energy Letters
JF - ACS Energy Letters
IS - 6
ER -