2021
DOI: 10.1021/acs.nanolett.1c02897
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Tuning of the Interconnecting Layer for Monolithic Perovskite/Organic Tandem Solar Cells with Record Efficiency Exceeding 21%

Abstract: The photovoltaic performance of inorganic perovskite solar cells (PSCs) still lags behind the organic–inorganic hybrid PSCs due to limited light absorption of wide bandgap CsPbI3‑xBr x under solar illumination. Constructing tandem devices with organic solar cells can effectively extend light absorption toward the long-wavelength region and reduce radiative photovoltage loss. Herein, we utilize wide-bandgap CsPbI2Br semiconductor and narrow-bandgap PM6:Y6-BO blend to fabricate perovskite/organic tandem solar c… Show more

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Cited by 47 publications
(64 citation statements)
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“…[104] Wang et al used this wide-bandgap CsPbI 2 Br semiconductor with narrow-bandgap PM6:Y6-BO blend to fabricate a perovskite/organic tandem solar cells to increase the utilization of solar wavelength region (Figure 8j). [13] This approach yielded an efficiency of 21.1% and a very small tandem open-circuit voltage loss of 0.06 V. This gives future direction for the use of this inorganic wide bandgap semiconductor in tandem solar cell application. In 2022, Hu et al exhibited enhanced domain growth due to strain relaxation by performing α → δ → α phase transition growth, which enabled them to achieve a remarkably high V oc of 1.36 V. [105] Table 3 lists the novelty, device architecture and yearly progress in efficiency of CsPbI 2 Br.…”
Section: Cspbi 2 Brmentioning
confidence: 81%
See 1 more Smart Citation
“…[104] Wang et al used this wide-bandgap CsPbI 2 Br semiconductor with narrow-bandgap PM6:Y6-BO blend to fabricate a perovskite/organic tandem solar cells to increase the utilization of solar wavelength region (Figure 8j). [13] This approach yielded an efficiency of 21.1% and a very small tandem open-circuit voltage loss of 0.06 V. This gives future direction for the use of this inorganic wide bandgap semiconductor in tandem solar cell application. In 2022, Hu et al exhibited enhanced domain growth due to strain relaxation by performing α → δ → α phase transition growth, which enabled them to achieve a remarkably high V oc of 1.36 V. [105] Table 3 lists the novelty, device architecture and yearly progress in efficiency of CsPbI 2 Br.…”
Section: Cspbi 2 Brmentioning
confidence: 81%
“…[12] Recently, Wang et al successfully utilized a wide-bandgap CsP-bI 2 Br semiconductor and an organic blend of narrow-bandgap PM6:Y6-BO to fabricate perovskite/organic tandem solar cells which yielded an efficiency of 21.1%. [13] Although thermally stable, CsPbI 3 faces the problem of moisture instability and high-temperature crystallization. This instability is attributed to the small ionic radii of Cs (167 pm) which result in a Goldschmidt tolerance value of 0.81.…”
mentioning
confidence: 99%
“…The OSCs usually employ absorbers with E g of 1.2-1.3 eV, match-ing well with CsPbI 2 Br perovskite (E g = 1.92 eV). [183][184][185][186][187] However, inorganic perovskites require a high-temperature annealing process, which is incompatible with flexible substrates and energy conservation. Turning to organic-inorganic hybrid perovskites, combining the preliminary explorations of perovskite/organic TSCs, [188][189][190] Chen et al established a semi-empirical model for perovskite/organic TSCs to assess the PCE limit of various combinations.…”
Section: Perovskite/organic Tscsmentioning
confidence: 99%
“…The OSCs usually employ absorbers with E g of 1.2–1.3 eV, matching well with CsPbI 2 Br perovskite ( E g = 1.92 eV). [ 183–187 ] However, inorganic perovskites require a high‐temperature annealing process, which is incompatible with flexible substrates and energy conservation.…”
Section: Applications Of Wbg Pscsmentioning
confidence: 99%
“…Chen et al 37 reported a semi-empirical device model to optimize the PCEs of perovskite-organic tandem solar cells with a certified value of 19.5%. Xie et al, 38 Wang et al, 39 and Chen et al 40 demonstrated the potential of combining wide band gap inorganic perovskites with low band gap organic active layers in tandem devices. However, these devices have an active area of no more than 0.15 cm 2 .…”
Section: ■ Introductionmentioning
confidence: 99%