Towards high efficiency inverted Sb2Se3 thin film solar cells

Cao, Yu; Zhu, Xiaoli; Chen, Hanbo; Zhang, Xintong; Zhou, Jing; Hu, Ziyang; Pang, Jinbo

doi:10.1016/j.solmat.2019.109945

Cited by 161 publications

(103 citation statements)

References 111 publications

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“…In the applications and physics of semiconductors, two general routes are adopted to create the mobile charge carriers in the valence bands (VB) and/or conduction bands (CB): by either impinging illumination (electron–hole pairs) or by applying a gate‐bias through the field‐effect (majority carriers near gate dielectric/semiconductor interface) to increase the material's conductivity by many folds . The energy relaxation pathways of photoexcited carriers drive the basic operational principle of ultraviolet (UV) photodetectors, photovoltaics or solar cells, and field‐effect transistor (FET) devices . Photoconductivity serves as a complementary probe to the regular electrical resistivity and helps us to understand the complex interplay between the light generated carriers, native defects, band‐structure modification, and structural transition relating to the changes in the local coordination environment under external stimuli.…”

Section: Introductionmentioning

confidence: 99%

Tuning the Photoresponse of Nano‐Heterojunction: Pressure‐Induced Inverse Photoconductance in Functionalized WO₃ Nanocuboids

et al. 2019

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Inverse photoconductivity (IPC) is a unique photoresponse behavior that exists in few photoconductors in which electrical conductivity decreases with irradiation, and has great potential applications in the development of photonic devices and nonvolatile memories with low power consumption. However, it is still challenging to design and achieve IPC in most materials of interest. In this study, pressure‐driven photoconductivity is investigated in n‐type WO3 nanocuboids functionalized with p‐type CuO nanoparticles under visible illumination and an interesting pressure‐induced IPC accompanying a structural phase transition is found. Native and structural distortion induced oxygen vacancies assist the charge carrier trapping and favor the persistent positive photoconductivity beyond 6.4 GPa. The change in photoconductivity is mainly related to a phase transition and the associated changes in the bandgap, the trapping of charge carriers, the WO6 octahedral distortion, and the electron–hole pair recombination process. A unique reversible transition from positive to inverse photoconductivity is observed during compression and decompression. The origin of the IPC is intimately connected to the depletion of the conduction channels by electron trapping and the chromic property of WO3. This synergistic rationale may afford a simple and powerful method to improve the optomechanical performance of any hybrid material.

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Section: Introductionmentioning

confidence: 99%

Tuning the Photoresponse of Nano‐Heterojunction: Pressure‐Induced Inverse Photoconductance in Functionalized WO₃ Nanocuboids

et al. 2019

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“…[ 36 ] Due to the 2D structure and high electrical conductivity along with the simple fabrication, MXenes have been explored as electrodes and current collectors of metal ion batteries, sensors, gas and electrochemical storage media, energy devices, and catalysts. [ 37–46 ] Metallic conductivity and hydrophilic surface make MXenes good candidates for use as solution‐processed TCEs for flexible optoelectronic devices. However, MXene have not been properly used for supporting an LED because the MXene films can be severely damaged when they are coated with an acidic‐water‐based hole‐injection layer (HIL).…”

Section: Figurementioning

confidence: 99%

A 2D Titanium Carbide MXene Flexible Electrode for High‐Efficiency Light‐Emitting Diodes

et al. 2020

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Although several transparent conducting materials such as carbon nanotubes, graphene, and conducting polymers have been intensively explored as flexible electrodes in optoelectronic devices, their insufficient electrical conductivity, low work function, and complicated electrode fabrication processes have limited their practical use. Herein, a 2D titanium carbide (Ti3C2) MXene film with transparent conducting electrode (TCE) properties, including high electrical conductivity (≈11 670 S cm−1) and high work function (≈5.1 eV), which are achieved by combining a simple solution processing with modulation of surface composition, is described. A chemical neutralization strategy of a conducting‐polymer hole‐injection layer is used to prevent detrimental surface oxidation and resulting degradation of the electrode film. Use of the MXene electrode in an organic light‐emitting diode leads to a current efficiency of ≈102.0 cd A−1 and an external quantum efficiency of ≈28.5% ph/el, which agree well with the theoretical maximum values from optical simulations. The results demonstrate the strong potential of MXene as a solution‐processable electrode in optoelectronic devices and provide a guideline for use of MXenes as TCEs in low‐cost flexible optoelectronic devices.

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“…It has been widely used in the preparation of thin lm solar cells. [25][26][27] To our knowledge, there has been no report on preparing ion batteries electrodes with the CCS method.…”

Section: Introductionmentioning

confidence: 99%

A novel and fast method to prepare a Cu-supported α-Sb₂S₃@CuSbS₂binder-free electrode for sodium-ion batteries

et al. 2020

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Towards high efficiency inverted Sb2Se3 thin film solar cells

Cited by 161 publications

References 111 publications

Tuning the Photoresponse of Nano‐Heterojunction: Pressure‐Induced Inverse Photoconductance in Functionalized WO₃ Nanocuboids

Tuning the Photoresponse of Nano‐Heterojunction: Pressure‐Induced Inverse Photoconductance in Functionalized WO₃ Nanocuboids

A 2D Titanium Carbide MXene Flexible Electrode for High‐Efficiency Light‐Emitting Diodes

A novel and fast method to prepare a Cu-supported α-Sb₂S₃@CuSbS₂binder-free electrode for sodium-ion batteries

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Towards high efficiency inverted Sb2Se3 thin film solar cells

Cited by 161 publications

References 111 publications

Tuning the Photoresponse of Nano‐Heterojunction: Pressure‐Induced Inverse Photoconductance in Functionalized WO3 Nanocuboids

Tuning the Photoresponse of Nano‐Heterojunction: Pressure‐Induced Inverse Photoconductance in Functionalized WO3 Nanocuboids

A 2D Titanium Carbide MXene Flexible Electrode for High‐Efficiency Light‐Emitting Diodes

A novel and fast method to prepare a Cu-supported α-Sb2S3@CuSbS2binder-free electrode for sodium-ion batteries

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Tuning the Photoresponse of Nano‐Heterojunction: Pressure‐Induced Inverse Photoconductance in Functionalized WO₃ Nanocuboids

Tuning the Photoresponse of Nano‐Heterojunction: Pressure‐Induced Inverse Photoconductance in Functionalized WO₃ Nanocuboids

A novel and fast method to prepare a Cu-supported α-Sb₂S₃@CuSbS₂binder-free electrode for sodium-ion batteries