Moisture Induced Secondary Crystal Growth Boosting the Efficiency of Hole Transport Layer‐Free Carbon‐Based Perovskite Solar Cells beyond 19.5%

Li, Lingcong; Rao, Huashang; Wu, Zhujie; Hong, Jin; Zhang, Jianxin; Pan, Zhenxiao; Zhong, Xinhua

doi:10.1002/adfm.202308428

Cited by 29 publications

(12 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 39 ] Furthermore, the DACl PVK film, with its conduction band energy offset of 0.17 eV, can also serve as an electron‐blocking layer, preventing electrons from undergoing nonradiative recombination at the carbon electrode. [ 40 ]…”

Section: Resultsmentioning

confidence: 99%

Efficient Carbon‐Based Perovskite Solar Cells Passivated by Alkylammonium Chloride

Tang,

Zong,

Zhong

et al. 2024

Solar RRL

View full text Add to dashboard Cite

Carbon‐based hole‐transport layer free perovskite solar cells (C‐PSCs) have garnered significant attention in the research community due to their cost‐effectiveness and high stability. However, the absence of a traditional hole‐transporting layer (HTL) can lead to substantial non‐radiative recombination of charge carriers between the perovskite layer and the carbon electrode, significantly impacting efficiency. In this study, we investigate the performance effects of different alkylammonium chlorides, including butylammonium chloride, octylammonium chloride, and dodecylammonium chloride (DACl), on perovskite (FA0.1MA0.9PbI3) to produce high‐performance HTL‐free C‐PSCs. Following passivation, the film exhibits a more uniform grain size distribution and fewer grain boundary defects. Furthermore, with an increase in the alkyl chain length, enhanced interactions with the perovskite film result in reduced trap state density and increased carrier lifetime. After DACl passivation, the C‐PSC achieves a remarkable power conversion efficiency of 16.56% and a high open‐circuit voltage (VOC) of 1.074 V. The VOC enhancement is primarily attributed to the better energy level alignment, effectively improving hole transport and electron blocking capabilities while suppressing non‐radiative recombination. Additionally, they demonstrate exceptional hydrophobic characteristics and robust stability in the presence of humidity, making them particularly promising for future practical applications in the field of photovoltaics.This article is protected by copyright. All rights reserved.

show abstract

Section: Resultsmentioning

confidence: 99%

Efficient Carbon‐Based Perovskite Solar Cells Passivated by Alkylammonium Chloride

Tang,

Zong,

Zhong

et al. 2024

Solar RRL

View full text Add to dashboard Cite

show abstract

“…As a result, the efficiency of the PSCs achieved an impressive new record of 19.52%. [85] The unencapsulated devices maintained 92% of the initial efficiency after being stored for The conductive carbon film prepared on a plastic substrate at 70 °C. Reproduced with permission, [75] Copyright 2014, American Chemical Society.…”

Section: Graphitementioning

confidence: 99%

Application of Carbon Materials in Conductive Electrodes for Perovskite Solar Cells

Meng,

Wang,

Chang

et al. 2024

Solar RRL

View full text Add to dashboard Cite

Over the past decade, perovskite solar cells (PSCs) have achieved significant achievements. But the golden triangle problem of commercial development, which encompasses high efficiency, high stability, and low cost, remains unresolved. Carbon materials exhibit a diverse range of morphological structures and possess numerous advantages. They are extensively used in PSCs to overcome the challenges encountered during PSCs commercialization. The PSCs utilizing graphene as the top electrodes not only deliver an impressive efficiency of 22.8%, but also show exceptional long‐term stability. The PSCs using carbon nanotubes as transparent conductive electrodes obtain an efficiency of 19%, exhibiting significant potential for scalable applications. Herein, the advantages of carbon materials as conductive electrodes are overviewed. The compatibility of carbon materials as conductive electrodes in PSCs, along with the associated challenges, regulatory strategies, and device performance are systematically discussed in terms of their intrinsic characteristics. The application of carbon materials derived from petroleum by‐products and biomass in the top electrodes of PSCs are summarized in detail. Finally, the underlying reasons why PSCs using carbon electrode show a comparatively lower efficiency when compared to conventional devices is analyzed in‐depth. The potential research directions are proposed to promote the development of carbon conductive electrodes in PSCs.This article is protected by copyright. All rights reserved.

show abstract

“…Since 2013, research on carbon-based perovskite solar cells (C-PSCs) has made significant progress, and the photovoltaic conversion efficiency (PCE) has been steadily increasing. The PCE has increased from the initial 6.6 to 15.9% in 2017 and is projected to reach the highest certified efficiency of 19.52% in 2023. However, it still lags behind the theoretical Shockley–Queisser limit efficiency of 31.64% .…”

Section: Introductionmentioning

confidence: 99%

Enhancing Efficiency and Stability in Carbon-Based Perovskite Solar Cells by Double Passivation with Ultralow-Cost Coal-Derived Graphene and Its Derivatives

Zhao,

Hu,

Cao

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Coal-derived carbon nanomaterials possess numerous superior features compared to other classic carbon, such as readily accessible surfaces, tunable pore structure, and facile and precise surface functionalization. Therefore, the controllable preparation of coal-derived carbon nanomaterials is anticipated to be of great significance for the performance improvement and commercialization process of carbon-based perovskite solar cells (C-PSCs). In this study, we successfully synthesized highly stable and commercially valuable graphene oxide (GO) and reduced graphene oxide (rGO) utilizing coal. Compared to traditional methods and commercial graphene, the chemical oxidation and pyrolysis process used in this study is mild and simple, offering the advantages of controlled composition and the absence of other impurities. GO or rGO was incorporated into the top of the SnO 2 electron transport layer (ETL) of C-PSCs. Under optimized conditions and ultraviolet-ozone (UVO) irradiation, the ultimate power conversion efficiency (PCE) increased from the unmodified 12.4 to 14.04% (based on rGO) and 15.18% (based on GO), representing improvements of 22 and 31%, respectively. The improved photovoltaic performance is mainly owing to enhanced charge transport capabilities, denser interfacial contacts, improved carrier separation properties, increased conductivity, and abundance of hydrophilic functional groups in GO, which can form more stable hydrogen bonds with SnO 2 . After being stored at room temperature and ambient humidity for 30 days, the modified, unpacked devices retained 87% of the highest power conversion efficiency (PCE). This study introduces a practical and manageable method to enhance the performance of C-PSCs by using functional carbon nanomaterials derived from coal.

show abstract

Moisture Induced Secondary Crystal Growth Boosting the Efficiency of Hole Transport Layer‐Free Carbon‐Based Perovskite Solar Cells beyond 19.5%

Cited by 29 publications

References 61 publications

Efficient Carbon‐Based Perovskite Solar Cells Passivated by Alkylammonium Chloride

Efficient Carbon‐Based Perovskite Solar Cells Passivated by Alkylammonium Chloride

Application of Carbon Materials in Conductive Electrodes for Perovskite Solar Cells

Enhancing Efficiency and Stability in Carbon-Based Perovskite Solar Cells by Double Passivation with Ultralow-Cost Coal-Derived Graphene and Its Derivatives

Contact Info

Product

Resources

About