Colloidal synthesis and charge carrier dynamics of Cs4Cd1−Cu Sb2Cl12 (0 ≤ x ≤ 1) layered double perovskite nanocrystals

Cai, Tong; Shi, Wenwu; Gosztola, David J.; Kobbekaduwa, Kanishka; Yang, Hanjun; Jin, Na; Nagaoka, Yosuke; Dube, Lacie; Schneider, Jeremy; Hwang, Sooyeon; Gao, Jianbo; Ma, Xuedan; Chen, Ou

doi:10.1016/j.matt.2021.07.018

Cited by 23 publications

(24 citation statements)

References 74 publications

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“…S7). 21,22 Meanwhile, the prolonged charge carriers' lifetime observed from the TA results indicates less charge carrier recombination and better charge carriers transport for FAPbI 3 films with ΔT than that of control cases (Fig. S8), which is as supported by the results of J ph -V eff (Fig.…”

Section: Evidence Of Thermoelectric Effect For Pscs With δTsupporting

confidence: 59%

Cooperative Boosting Performance of Halide Perovskite Solar Cells between Photoelectric and Thermoelectric Effect

Haque

et al. 2022

Preprint

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The sufficient utilization of longer-wavelength infrared light is a long-sought goal for efficient perovskite solar cells (PSCs) since they convert into heat easily and destroy the device stability. Establishing thermoelectric effect on the same PSCs is supposed to be an efficient way to convert heat into electricity. However, whether thermoelectric effect exists during the photovoltaic process has never been concerned. Herein, we report that the FAP-based PSCs operated under temperature differences (ΔT=15 oC) afford a champion PCE of 25.74%, higher than 22.84% with ΔT=0 oC, along with an improved Voc from 1.17 V to 1.23 V. It’s demonstrated that integrating photoelectric and thermoelectric effects can magnify the solar-to-electricity conversion. The critical factors to success are utilizing adequately photocarrier in parallel with regulating the intrinsic carrier directional transport and facilitating the charge carriers’ collection. The work shed light on the synergistic contribution of photoelectric and thermoelectric effect to efficient PSCs.

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Section: Evidence Of Thermoelectric Effect For Pscs With δTsupporting

confidence: 59%

Cooperative Boosting Performance of Halide Perovskite Solar Cells between Photoelectric and Thermoelectric Effect

Haque

et al. 2022

Preprint

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“…On the basis of the previous results, the accelerative grain growth of kesterite thin films by Sb doping was resulted from the liquidassisted grain growth due to the formation of low-melting Sb 2 Se 3 during the annealing process (Guo et al, 2015;Cai et al, 2020). The cross-sectional SEM images indicate that the CZTSSe films are composed by a typical double-layer structure with bigger grains at the surface and smaller grains at the bottom.…”

Section: Devicementioning

confidence: 91%

Doping of Sb into Cu2ZnSn(S,Se)4 absorber layer via Se&Sb2Se3 co-selenization strategy for enhancing open-circuit voltage of kesterite solar cells

et al. 2022

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Kesterite-structured Cu2ZnSn(S,Se)4 (CZTSSe) thin film photovoltaics have attracted considerable attention in recent years because of its low-cost and eco-friendly raw material, as well as high theoretical conversion efficiency. However, its photovoltaic performance is hindered by large open-circuit voltage (VOC) deficiency due to the presence of intrinsic defects and defect clusters in the bulk of CZTSSe absorber films. The doping of extrinsic cation to the CZTSSe matrix was adopted as an effective strategy to ameliorate defect properties of the solar cell absorbers. Herein, a novel Se&Sb2Se3 co-selenization process was employed to introduce Sb into CZTSSe crystal lattice. The results reveal that Sb-doping plays an active role in the crystallization and grain growth of CZTSSe absorber layer. More importantly, one of the most seriously detrimental SnZn deep defect is effectively passivated, resulting in significantly reduced deep-level traps and band-tail states compared to Sb free devices. As a result, the power conversion efficiency of CZTSSe solar cell is increased significantly from 9.17% to 11.75%, with a VOC especially enlarged to 505 mV from 449 mV. This insight provides a deeper understanding for engineering the harmful Sn-related deep defects for future high-efficiency CZTSSe photovoltaic devices.

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“…[34] Currently, the research on such a significant, cheap, and stable biomass mainly focuses on its biological properties and its use as a capping ligand for perovskite nanomaterials. [33][34][35][36][37][38][39][40] These uses somehow reduce their true values. It should be noted that OA exhibits short-wavelength absorption and emission.…”

Section: Doi: 101002/adom202200417mentioning

confidence: 99%

Interface Engineering of Bi‐Fluorescence Molecules for High‐Performance Data Encryption and Ultralow UV‐Light Detection

Wang

Gutiérrez‐Arzaluz

Yin

et al. 2022

Advanced Optical Materials

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It is extremely difficult if not impossible to effectively and precisely regulate the luminescence of organic chromophores from different electronic excited states through external stimuli for use in light‐conversion devices. This is mainly due to the difficulty in breaking Kasha's rule by large energy separation and stabilization of different emissive electronic excited states. Here, the authors address this great challenge in a single experiment by expanding the utility of a monounsaturated omega‐9 fatty acid (oleic acid) capped with organic chromophores as a new and efficient luminescent regulator. More specifically, the authors have successfully promoted the use of oleic acid as an efficient and reversible switch that can precisely regulate chromophore luminescence. These time‐resolved absorption and luminescence experiments, along with density functional theory calculations have clearly demonstrated that ultrafast electron transfer from oleic acid to the difluoroboron β‐diketonate (DFBK) chromophores efficiently blocks the intramolecular charge transfer process of DFBK chromophores, and activates the locally excited state luminescence, leading to different emission colors from different electronic excited states for ultralow UV‐light detection and high‐performance data encryption.

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Colloidal synthesis and charge carrier dynamics of Cs4Cd1−Cu Sb2Cl12 (0 ≤ x ≤ 1) layered double perovskite nanocrystals

Cited by 23 publications

References 74 publications

Cooperative Boosting Performance of Halide Perovskite Solar Cells between Photoelectric and Thermoelectric Effect

Cooperative Boosting Performance of Halide Perovskite Solar Cells between Photoelectric and Thermoelectric Effect

Doping of Sb into Cu2ZnSn(S,Se)4 absorber layer via Se&Sb2Se3 co-selenization strategy for enhancing open-circuit voltage of kesterite solar cells

Interface Engineering of Bi‐Fluorescence Molecules for High‐Performance Data Encryption and Ultralow UV‐Light Detection

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