Bifunctional green cellulose derivatives employed for high efficiency and stable perovskite solar cells under ambient environment

Zhang, Pengyun; Gu, Ningxia; Song, Lixin; Chen, Wei–Hsiang; Du, Pingfan; Yin, Xin; Xiong, Jie

doi:10.1016/j.jallcom.2021.161247

Cited by 13 publications

(16 citation statements)

References 59 publications

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“…36 Moreover, polymer chains in general are known to reside at the grain boundaries of perovskite domains. [51][52][53] We suspect that the spatial steric bulk and thermal mobility of the polymer backbones of the cellulose derivatives affected the crystal formation of MAPbI 3 , thereby decreasing the average size of the perovskite crystals. 36 Moreover, the average sizes of the crystal grains of the PQ-Cl/MAPbI 3 composite lms were larger than those of the PQ-F/MAPbI 3 and PQ-Br/MAPbI 3 composite lms.…”

Section: Morphologies Of Perovskite Lms Incorporating Quaternary Amm...mentioning

confidence: 99%

“…11(b)]. We obtained carrier lifetimes by tting the PL spectra with a double-exponential-decay model: 53,68…”

Section: Uv-vis Absorption Pl and Trpl Spectra Of Perovskite Lms Inc...mentioning

confidence: 99%

“…We considered the average lifetime to be the average of the fast and slow decay constants. 53 We obtained the average decay lifetime from the equation…”

Section: Uv-vis Absorption Pl and Trpl Spectra Of Perovskite Lms Inc...mentioning

confidence: 99%

“…where s 1 is related to defect recombination or interface charge transport from MAPbI 3 to the charge transport materials, and s 2 is related to radiative recombination. 53,68 For the PQ-Cl/MAPbI 3 blend lms, the lifetimes of PQ-Cl-0.03 and PQ-Cl-0.06 were shorter than that of the pristine MAPbI 3 lm, implying that the incorporation of PQ-Cl could effectively minimize the number of defects of the perovskite lm and enhance charge extraction, thereby minimizing non-radiative combination loss. Nevertheless, an excess PQ-Cl content did not decrease the number of defects of the perovskite lm.…”

Section: Uv-vis Absorption Pl and Trpl Spectra Of Perovskite Lms Inc...mentioning

confidence: 99%

“…46,47 The incorporation of ethyl cellulose or cellulose acetate into the perovskite lm can signicantly improve its moisture stability, thermal stability, and photostability by forming hydrogen bonds with MAPbI 3 to stabilize its crystal structure. [51][52][53] Moreover, we expected the quaternary ammonium ions to passivate only the MA + vacancies by occupying cuboctahedral sites, thereby compensating for MA + loss at the surfaces of the perovskite lms. 17 Because the uoride (F À ), chloride (Cl À ), and bromide (Br À ) ions in the quaternary ammonium salts are more electronegative and have smaller ionic radii than iodide (I À ) anions, they form ionic bonds with Pb 2+ cations that are stronger than the Pb-I bonds in perovskite lms.…”

Section: Introductionmentioning

confidence: 99%

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Quaternary ammonium halide-containing cellulose derivatives for defect passivation in MAPbI₃-based perovskite solar cells

Huang

et al. 2022

Sustainable Energy Fuels

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Section: Morphologies Of Perovskite Lms Incorporating Quaternary Amm...mentioning

confidence: 99%

“…11(b)]. We obtained carrier lifetimes by tting the PL spectra with a double-exponential-decay model: 53,68…”

Section: Uv-vis Absorption Pl and Trpl Spectra Of Perovskite Lms Inc...mentioning

confidence: 99%

“…We considered the average lifetime to be the average of the fast and slow decay constants. 53 We obtained the average decay lifetime from the equation…”

Section: Uv-vis Absorption Pl and Trpl Spectra Of Perovskite Lms Inc...mentioning

confidence: 99%

Section: Uv-vis Absorption Pl and Trpl Spectra Of Perovskite Lms Inc...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Quaternary ammonium halide-containing cellulose derivatives for defect passivation in MAPbI₃-based perovskite solar cells

Huang

et al. 2022

Sustainable Energy Fuels

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Cellulose‐Assisted Formation of 2D Hybrid Halide Perovskite Nanocrystals with Enhanced Stability for Light‐Emitting Devices

Ramos‐Terrón

Spitzer

Martín

et al. 2023

Advanced Optical Materials

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A common approach to enhance the stability of metal halide perovskites (MHPs) implemented in optical and optoelectronic devices is to incorporate polymer additives into the perovskite layer. A β‐(1,4) cellulose oligosaccharide (COS) synthesized by mechanocatalytic depolymerization of cellulose has been incorporated to films of the BA2MA4Pb5I16 (BA = n‐butylammonium and MA = methylammonium) two‐dimensional (2D) Ruddlesden‐Popper (RP) hybrid perovskite. Scanning Electron Microscopy (SEM) images displayed a three‐fold reduction of the 2D RP perovskite grains (≈30–40 nm), close to the quantum confinement scale. The analysis of the dark J–V curves of single carrier devices by using the space charge limited current (SCLC) method resulted in a rise of the defect concentration. A notable 14‐fold increase in the photoluminescence (PL) signal at high COS content is detected. Moreover, the analysis of the temperature dependence PL measurements (80–300 K) resulted in a larger exciton binding energy, Eb = 180 to 370 meV, at high COS content. Light emitting diodes of the 2D RP perovskites (PeLEDs) are fabricated w/o the COS compound. The stability test performed under operation (5 V) displays 20 times higher operational lifetimes at high COS content while the luminance is also increased in the devices with the COS compound.

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Bifunctional Cellulose Interlayer Enabled Efficient Perovskite Solar Cells with Simultaneously Enhanced Efficiency and Stability

Zhang

Wang

et al. 2023

Advanced Science

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Interfacial engineering is a vital strategy to enable high-performance perovskite solar cells (PSCs). To develop efficient, low-cost, and green biomass interfacial materials, here, a bifunctional cellulose derivative is presented, 6-O-[4-(9H-carbazol-9-yl)butyl]-2,3-di-O-methyl cellulose (C-Cz), with numerous methoxy groups on the backbone and redox-active carbazole units as side chains. The bifunctional C-Cz shows excellent energy level alignment, good thermal stability and strong interactions with the perovskite surface, all of which are critical for not only carrier transportation but also potential defects passivation. Consequently, with C-Cz as the interfacial modifier, the PSCs achieve a remarkably enhanced power conversion efficiency (PCE) of 23.02%, along with significantly enhanced long-term stability. These results underscore the advantages of bifunctional cellulose materials as interfacial layers with effective charge transport properties and strong passivation capability for efficient and stable PSCs.

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Bifunctional green cellulose derivatives employed for high efficiency and stable perovskite solar cells under ambient environment

Cited by 13 publications

References 59 publications

Quaternary ammonium halide-containing cellulose derivatives for defect passivation in MAPbI₃-based perovskite solar cells

Quaternary ammonium halide-containing cellulose derivatives for defect passivation in MAPbI₃-based perovskite solar cells

Cellulose‐Assisted Formation of 2D Hybrid Halide Perovskite Nanocrystals with Enhanced Stability for Light‐Emitting Devices

Bifunctional Cellulose Interlayer Enabled Efficient Perovskite Solar Cells with Simultaneously Enhanced Efficiency and Stability

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Bifunctional green cellulose derivatives employed for high efficiency and stable perovskite solar cells under ambient environment

Cited by 13 publications

References 59 publications

Quaternary ammonium halide-containing cellulose derivatives for defect passivation in MAPbI3-based perovskite solar cells

Quaternary ammonium halide-containing cellulose derivatives for defect passivation in MAPbI3-based perovskite solar cells

Cellulose‐Assisted Formation of 2D Hybrid Halide Perovskite Nanocrystals with Enhanced Stability for Light‐Emitting Devices

Bifunctional Cellulose Interlayer Enabled Efficient Perovskite Solar Cells with Simultaneously Enhanced Efficiency and Stability

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Quaternary ammonium halide-containing cellulose derivatives for defect passivation in MAPbI₃-based perovskite solar cells

Quaternary ammonium halide-containing cellulose derivatives for defect passivation in MAPbI₃-based perovskite solar cells