Eco-friendly antisolvent enabled inverted MAPbI<sub>3</sub> perovskite solar cells with fill factors over 84%

Cui, Yuying; Wang, Shurong; Li, Chengbo; Wang, Aili; Ren, Jing; Yang, Chang‐Lin; Chen, Bin; Wang, Zhen; Hao, Feng

doi:10.1039/d1gc00599e

Cited by 24 publications

(17 citation statements)

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“…As illustrated in SI Table S1, the synthetic cost of BN-12 was estimated to be $42.27 g −1 , which was 1 / 10 of the PTAA ($423 g −1 ). 26,27 1 H NMR and 13 C NMR spectra were used to determine the structure of the intermediate small molecule (Z5) as described in SI Figures S10 and S11, respectively, which have been reported in our previous work. 44 The structures of the prepared polymers were confirmed by Fourier transform infrared spectroscopy (FTIR).…”

Section: Resultsmentioning

confidence: 99%

“…According to reports, the abatement of the V oc and FF was detrimentally affected by the interfacial defects-induced nonradiative recombination (NRR). − Due to the inherent polycrystalline nature, the perovskite (taking MAPbI 3 as an example) crystallization process inevitably brings about intrinsic defects within the perovskite grain boundaries (GBs) and interfaces including vacancies (i.e., V MA , V Pb , and V I ), interstitials (i.e., MA i , Pb i , and I i ), and antisite substitutions (i.e., Pb I , MA I, MA Pb , I Pb , I MA , and Pb MA ). ,, Among all the defects, the antisite substitutions are classified as deep-level defects, which are prone to capture photogenerated carriers and reduce the charge density at steady state. Vacancies and interstitials are generally considered as the shallow level defects, causing local band bending and phase segregation .…”

Section: Introductionmentioning

confidence: 99%

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A Multifunctional Fluorinated Polymer Enabling Efficient MAPbI₃-Based Inverted Perovskite Solar Cells

Luo

Zong

Zhang

et al. 2022

ACS Appl. Mater. Interfaces

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Exploring polymeric hole-transporting materials (HTMs) with passivation functions represents a simplified and effective approach to minimize the perovskite defect density. To date, most of reported polymeric HTMs were applied to fabricate n-i-p regular perovskite solar cells (PSCs). The polymers compatible for p-i-n inverted PSCs were very limited. Moreover, the passivation polymers were devoted to passivate the uncoordinated Pb2+. However, the MA+ cation defect has profound unwanted effect on device efficiency and long-term stability. In order to synchronously passivate the Pb2+ and MA+ defects in p-i-n inverted PSCs, a new nonfused polymer was intentionally explored via mild polymerization. The aromatic bridge instead of long alkyl chains enabled polymer BN-12 to achieve excellent thermal stability and good wettability of perovskite precursor. Furthermore, the incorporation of chemical anchor sites (“CO” and “F”) strongly controlled the crystallization of perovskite and restrained the MA+ ion migration. As a result, a significant fill factor (FF) of 82.9% and an enhanced power conversion efficiency (PCE) of 20.28% were achieved for MAPbI3-based devices with the dopant-free BN-12, exceeding those with the commercial HTM PTAA (FF = 81.7%, PCE = 19.51%). More importantly, the unencapsulated devices based on BN-12 realized outstanding long-term stability, maintaining approximately 95% of its initial efficiency after stored for 85 days. By contrast, the PTAA-based device showed rapid decrease which retained only 50% of its initial value after 45 days.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Multifunctional Fluorinated Polymer Enabling Efficient MAPbI₃-Based Inverted Perovskite Solar Cells

Luo

Zong

Zhang

et al. 2022

ACS Appl. Mater. Interfaces

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“…They obtained a high FF of 84% and a high PCE of 20.61% for MAPbI 3 PSCs with NiO X as HTL. [136] Subsequently, Deng et al applied a benzotriazole derivative (6-chloro-1-hydroxybenzotriazole, Cl-HOBT) to improve the crystallinity and reduce the trap density of MAPbI 3 perovskite film. The incorporation of Cl-HOBT suppressed the trap-assisted nonradiative recombination, improved energy level alignment, and enhanced the charge carrier separation and transfer process.…”

Section: The Role Of Htl In the Performance Of The Inverted Planar P-...mentioning

confidence: 99%

“…They obtained a high FF of 84% and a high PCE of 20.61% for MAPbI 3 PSCs with NiO X as HTL. [ 136 ] Subsequently, Deng et al. applied a benzotriazole derivative (6‐chloro‐1‐hydroxybenzotriazole, Cl‐HOBT) to improve the crystallinity and reduce the trap density of MAPbI 3 perovskite film.…”

Section: Common Solar Cell Structures and Their Effect On Performancementioning

confidence: 99%

Configuration of Methylammonium Lead Iodide Perovskite Solar Cell and its Effect on the Device's Performance: A Review

Dahal

2022

Adv Materials Inter

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Since it is a source of clean energy, harnessing solar power is a natural solution to resolving the prevalent energy crisis. A solar cell is the most effective device to convert solar energy into electricity. Hence, a study on solar cells is the utmost area of interest in the energy sector.As illustrated in Figure 1, there are three generations of solar cells. Among these, the first-generation cells were of p-n homojunction on a silicon crystal, where the thickness of the absorbing layer was more than 180 µm. Mainly, silicon (Si) and germanium (Ge), indirect bandgap materials, assemble the cell. Single crystal silicon solar cells exhibit a conversion efficiency of about 26.7% and dominate the current solar cell market. [2] The second-generation solar cells are heterojunction solar cells using direct bandgap thin film materials (CdS, CIGS, etc.). The demerits of the first and second-generation solar cells are the cost of semiconducting materials, limited availability, and toxicity to human health. Emerging thirdgeneration solar cells act as an alternative. These include dyesensitized solar cells (DSSCs), organic photovoltaics, quantum dots, and perovskite solar cells (PSCs). Among all those, PSCs are at the center of the emerging photovoltaic technology with rapid improvement in the performance within a few years of discovering the first perovskite cell. Figure 2 depicts the different types of solar cells and their developmental trend for the past 46 years, showing that the performance of the PSCs has improved dramatically during a short period.The foundation technology for PSCs is DSSCs. In 1991, O'Regan and Grätzel developed a low-cost photochemical solar cell based on a high surface area nanocrystalline TiO 2 film sensitized with dye molecule. [4] The primary concern of DSSCs is the use of liquid electrolytes, which regenerate the dye after it injects electrons into the conduction band (CB) of the working electrodes (anode), which are mainly the thin layer of the metal oxide semiconductor. The electrolyte also acts as a hole transporting material to the counter electrodes (cathode). [5] The solid-state hole conductor emerged as a replacement to minimize leakage concerns in liquid electrolyte-based DSSCs. With several modifications in the device structures, researchers are trying to synthesize efficient DSSCs. However, the low absorption coefficientIn its initial phase in 2009, the inorganic-organic hybrid perovskite solar cells (PSCs) delivered a 3.8% power conversion efficiency (PCE), which is far below the present 25.7% PCE obtained in 2022. The significant improvement of the efficiency of PSCs in such a short period has stimulated significant interest in the photovoltaic community. However, the performance of current PSCs is behind the commercially available and widely used solar cells in terms of stability and scalability. Among various commonly studied perovskite materials, methylammonium lead iodide (MAPbI 3 ) is the most widely studied. This review will focus on the common solar cell structures (mesoporo...

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“…25–28 A crucial factor limiting the large-scale production of PSCs is the massive use of these toxic solvents. 29–31 Recently, some attempts have been made to replace the toxic solvents with less toxic γ-butyrolactone (GBL) and acetonitrile (ACN), although sometimes it is accompanied by the compromise of the device performance. 32,33 Ramadan et al fabricated perovskite films which were deposited from ACN solvent only with a PCE of 18.5%.…”

Section: Introductionmentioning

confidence: 99%

Acetone complexes for high-performance perovskite photovoltaics with reduced nonradiative recombination

et al. 2022

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Eco-friendly antisolvent enabled inverted MAPbI₃ perovskite solar cells with fill factors over 84%

Abstract: Antisolvents assisted crystallization has been most widely applied in depositing high-quality perovskite thin films for efficient perovskite solar cells (PSCs). However, the toxicity of common antisolvents (chlorobenzene, toluene etc.) involved...

Cited by 24 publications

References 60 publications

A Multifunctional Fluorinated Polymer Enabling Efficient MAPbI₃-Based Inverted Perovskite Solar Cells

A Multifunctional Fluorinated Polymer Enabling Efficient MAPbI₃-Based Inverted Perovskite Solar Cells

Configuration of Methylammonium Lead Iodide Perovskite Solar Cell and its Effect on the Device's Performance: A Review

Acetone complexes for high-performance perovskite photovoltaics with reduced nonradiative recombination

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Eco-friendly antisolvent enabled inverted MAPbI3 perovskite solar cells with fill factors over 84%

Abstract: Antisolvents assisted crystallization has been most widely applied in depositing high-quality perovskite thin films for efficient perovskite solar cells (PSCs). However, the toxicity of common antisolvents (chlorobenzene, toluene etc.) involved...

Cited by 24 publications

References 60 publications

A Multifunctional Fluorinated Polymer Enabling Efficient MAPbI3-Based Inverted Perovskite Solar Cells

A Multifunctional Fluorinated Polymer Enabling Efficient MAPbI3-Based Inverted Perovskite Solar Cells

Configuration of Methylammonium Lead Iodide Perovskite Solar Cell and its Effect on the Device's Performance: A Review

Acetone complexes for high-performance perovskite photovoltaics with reduced nonradiative recombination

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Eco-friendly antisolvent enabled inverted MAPbI₃ perovskite solar cells with fill factors over 84%

A Multifunctional Fluorinated Polymer Enabling Efficient MAPbI₃-Based Inverted Perovskite Solar Cells

A Multifunctional Fluorinated Polymer Enabling Efficient MAPbI₃-Based Inverted Perovskite Solar Cells