Stable monolithic hole-conductor-free perovskite solar cells using TiO 2 nanoparticle binding carbon films

Xu, Lei; Wan, Fang; Rong, Yaoguang; Chen, Hui; He, Song; Xu, Xiaochuan; Liu, Gang; Han, Hongwei; Yuan, Yongbo; Yang, Junliang; Gao, Yongli; Yang, Bingchu; Zhou, Conghua

doi:10.1016/j.orgel.2017.03.005

Cited by 50 publications

(26 citation statements)

References 33 publications

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“…The XRD diffraction pattern of the TiO 2 films is shown in Figure 3 b. The peaks at 25.3°, 38.0°, 48.1°, and 53.3° correspond to the diffraction peaks of the (101), (112), (200), and (211) crystal planes of TiO 2 [ 8 , 40 ], respectively, which belong to anatase TiO 2 as referred to JCPDS card (NO. 21-1272).…”

Section: Resultsmentioning

confidence: 99%

“…TiO 2 exhibits excellent photocatalytic properties and has been widely used in various fields in industry and agriculture [ 1 , 2 , 3 , 4 , 5 ]. However, the photocatalytic material of TiO 2 has a narrow photoresponse range (band gap of approximately 3.2 eV, which can only absorb ultraviolet light) and low photocatalytic quantum efficiency [ 2 , 6 , 7 , 8 , 9 ]. CdS has a small forbidden band width and good matching with the near-ultraviolet light segment in the solar spectrum, but it is prone to photo-corrosion and has a limited service life [ 9 , 10 , 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Copper Nitride Films with Superior Photocatalytic Activity through Magnetron Sputtering

et al. 2020

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TiO2 possesses a wide forbidden band of about 3.2 eV, which severely limits its visible light absorption efficiency. In this work, copper nitride (Cu3N) films were prepared by magnetron sputtering at different gas flow ratios. The structure of the films was tested by scanning electron microscope, X-ray diffractometer, and X-ray photoelectron spectroscope. Optical properties were investigated by UV-vis spectrophotometer and fluorescence spectrometer. Results show that the Cu3N crystal possesses a typical anti-ReO3 crystal structure, and the ratio of nitrogen and Cu atoms of the Cu3N films was adjusted by changing the gas flow ratio. The Cu3N films possess an optical band gap of about 2.0 eV and energy gap of about 2.5 eV and exhibit excellent photocatalytic activity for degrading methyl orange (degradation ratio of 99.5% in 30 min). The photocatalytic activity of Cu3N mainly originates from vacancies in the crystal and Cu self-doping. This work provides a route to broaden the forbidden band width of photocatalytic materials and increase their photoresponse range.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation of Copper Nitride Films with Superior Photocatalytic Activity through Magnetron Sputtering

et al. 2020

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“…The main differences between these four structures are the formation protocols of PVSK. For meso CPSCs, PVSK crystallites are formed in the prefabricated mesoscopic skeleton (containing ETL, blocking/insulating layer, and carbon‐electrode) by the “infiltration‐drying‐crystallization” processes . It is quite similar to that adopted in the monolithic quasi‐solid‐state electrolyte dye‐sensitized solar cells .…”

Section: Main Features Of Cpscsmentioning

confidence: 99%

“…The anchoring effect is reproducible. Due to improved loading of PVSK crystallites, and strengthening of the contact between PVSK and mesoporous skeleton, J SC higher than 20 mA cm −2 could be obtained . Moreover, it is worthy to note that the mesoporous skeleton is fabricated in air.…”

Section: Progress In Power Conversion Efficiencies Of the Cpscs (Htm‐mentioning

confidence: 99%

“…Thus, hole‐transporting‐material (HTM, or hole‐transport‐layer/HTL), on which metal‐electrodes‐based PSCs (noted by metal PSCs) are usually relied, is not necessarily used in CPSCs, leading to HTM‐free devices . From the pioneered works done by Han, Yang, Zhao, and coworkers, CPSCs have attracted ever‐increasing attention . As long as the formation process of PVSK is considered, four kinds of architectures have been adopted: meso CPSCs, embedment CPSCs, planar CPSCs, and quasi‐planar CPSCs.…”

Section: Introductionmentioning

confidence: 99%

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Carbon‐Electrode Based Perovskite Solar Cells: Effect of Bulk Engineering and Interface Engineering on the Power Conversion Properties

Zhou

Lin

2019

Solar RRL

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Carbon electrodes have been adopted widely in perovskite solar cells (PSCs). Due to its suitable work function (though not high enough), the carbon electrode itself could extract photogenerated holes and has helped to achieve a power conversion efficiency of ≈16% in the absence of hole‐transporting material. Meanwhile, due to the inert chemical nature and the micrometer‐sized film thickness (≈10 μm), carbon electrodes can prolong the stability of PSCs. These merits are appealing for the commercialization of PSCs. However, the efficiency of carbon‐electrode PSCs is relatively low. A gap of ≈30% remains when comparing with PSCs using evaporated metal films as the electrode. Herein, the progresses in the efficiency of the four kinds of carbon‐electrode based PSCs (mesoscopic, embedment, planar, and quasi‐planar) are reviewed and compared to metal‐electrode based PSCs. Then, the role of bulk engineering and interface engineering in the progress of efficiency is discussed. Finally, outlooks are described in accordance with the discussions.

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Stabilization of Perovskite Solar Cells: Recent Developments and Future Perspectives

et al. 2022

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Exceptional power conversion efficiency (PCE) of 25.7% in perovskite solar cells (PSCs) has been achieved, which is comparable with their traditional rivals (Si‐based solar cells). However, commercialization‐worthy efficiency and long‐term stability remain a challenge. In this regard, there are increasing studies focusing on the interface engineering in PSC devices to overcome their poor technical readiness. Herein, the roles of electrode materials and interfaces in PSCs are discussed in terms of their PCEs and perovskite stability. All the current knowledge on the factors responsible for the rapid intrinsic and external degradation of PSCs is presented. Then, the roles of carbonaceous materials as substitutes for noble metals are focused on, along with the recent research progress in carbon‐based PSCs. Furthermore, a sub‐category of PSCs, that is, flexible PSCs, is considered as a type of exceptional power source due to their high power‐to‐weight ratios and figures of merit for next‐generation wearable electronics. Last, the future perspectives and directions for research in PSCs are discussed, with an emphasis on their commercialization.

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Stable monolithic hole-conductor-free perovskite solar cells using TiO 2 nanoparticle binding carbon films

Cited by 50 publications

References 33 publications

Preparation of Copper Nitride Films with Superior Photocatalytic Activity through Magnetron Sputtering

Preparation of Copper Nitride Films with Superior Photocatalytic Activity through Magnetron Sputtering

Carbon‐Electrode Based Perovskite Solar Cells: Effect of Bulk Engineering and Interface Engineering on the Power Conversion Properties

Stabilization of Perovskite Solar Cells: Recent Developments and Future Perspectives

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