Synthesis of high quality PbS colloidal quantum dots by ultrasonic bath as photosensitizers in a TiO2 solar cell

Rosiles-Perez, C.; Serrano-Estrada, M.A.; Sidhik, Siraj; Alatorre-Ordaz, Alejandro; Torres–Castro, Alejandro; Hernández, Miguel Ángel Vallejo; Jiménez-González, A.E.; López–Luke, Tzarara

doi:10.1016/j.jssc.2020.121720

Cited by 11 publications

(7 citation statements)

References 52 publications

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“…The X-ray diffraction patterns of PbS CQDs consist of diffraction peaks that correspond to planes (200), (220), and (311). Rigaku software and Scherrer's equation (1) were used to calculate the s average size of crystallite.…”

Section: Resultsmentioning

confidence: 99%

“…Colloidal quantum dots (CQDs) are nanostructures covered by surfactant molecules or ligands and dispersed in a solution. Their electrical and optical properties are unique, with the optical band gap and absorption spectra Keywords co-precipitation method; dip-coating method; lead(ii) sulfide colloidal quantum dots; photovoltaic cells; successive ionic layer adsorption and reaction method 2 corresponding to particle size and multiple exciton generation (MEG), making them intriguing fabrication alternatives [1][2][3][4]. CQDs are commonly synthesized using the hot injection method, which requires rapidly injecting an organometallic precursor into a high boiling point solvent (>150 ο C) under a nitrogen atmosphere.…”

Section: Introductionmentioning

confidence: 99%

“…Rosiles-Perez et al [1] studied the precipitation procedure between cationic and anionic solutions under ultrasonic irradiation to form the required PbS CQDs. PbS CQDs are particularly impressive semiconductor materials since the optical band gap of PbS perfectly matches the infrared spectra wavelength range, which means they can efficiently absorb photon energy for photovoltaic cell light-harvesting [9].…”

Section: Introductionmentioning

confidence: 99%

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The Effect of PbS Colloidal Quantum Dots with CdS and ZnS Coating on Photovoltaic Properties

Wichaiyo

Kitiwan

Shen

et al. 2022

Curr. Appl. Sci. Technol.

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In this research, we used the co-precipitation method to fabricate lead sulfide colloidal quantum dots (PbS CQDs) for photovoltaic cells. PbS CQDs were deposited uniformly on a titanium dioxide electrode by the dip-coating method. Photoelectrodes were prepared by coating layers using the successive ionic layer adsorption and reaction (SILAR) method. A solar simulation was used to investigate the photovoltaic properties of photoelectrodes under one sun illumination (100 mW/cm2) at room temperature (AM 1.5 G). The photovoltaic measurements demonstrated that TiO2/PbS CQDs with CdS and ZnS coating electrodes had a maximum power conversion efficiency (PCE) of 1.01 %. The crystallite size of PbS CQDs with different coating layers was analyzed using X-ray diffraction (XRD), and the crystallite size range was 6-7 nm. The existence of PbS CQDs and coating layers on the TiO2 electrodes was confirmed by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). UV-visible spectroscopy was used to obtain the optical properties of the photoelectrodes. The optical band gap was 0.72-0.75 eV.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Effect of PbS Colloidal Quantum Dots with CdS and ZnS Coating on Photovoltaic Properties

Wichaiyo

Kitiwan

Shen

et al. 2022

Curr. Appl. Sci. Technol.

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“…Although it is widely established that ultrasound can generate alternate low-pressure and high-pressure waves in liquids, the development and collapse of small vacuum bubbles are not well understood ( Liang et al, 2013 ; Lu and Zhou, 2019 ; Wu et al, 2019 ; Rosiles-Perez et al, 2020 ).…”

Section: Synthesis Methods Of Cqdsmentioning

confidence: 99%

Recent Progress on Carbon Quantum Dots Based Photocatalysis

Jung

Sapner

Adhikari³

et al. 2022

Front. Chem.

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“…By ultrasonic assisted coprecipitation, Rosiles‐Perez et al. [ 53 ] added raw materials such as Pb(NO 3 ) 2 and Na 2 S into toluene/water mixed solvent and placed them in an ultrasonic device (frequency of 35 kHz, power output of 300 W, and bath temperature of 20–22 °C) for 30 min. PbS QDs with an average particle size of 6.8 nm were successfully prepared and directly used as a sensitizer for TiO 2 solar cells (power conversion efficiency, PCE = 0.71%).…”

Section: Synthetic Optimizationmentioning

confidence: 99%

Colloidal Quantum Dots: Synthesis, Composition, Structure, and Emerging Optoelectronic Applications

Zhang

et al. 2022

Laser & Photonics Reviews

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In recent decades, quantum dots (QDs) with tunable bandgap, large absorption coefficient, high quantum yield, multiexciton effect, and easy solution processing have unparalleled advantages in photoelectric conversion. Optoelectronic devices based on QDs of different composition have made great progress. However, there is still a lack of reviews on comparing the optoelectronic application level of semiconductor quantum dots (SQDs), perovskite quantum dots (PQDs), and carbon quantum dots (CDs), and also rarely providing a comprehensive summary of photocatalysis. First, this review almost completely summarizes advantages and disadvantages of common synthesis methods for QDs, especially pointing out the importance of optimization strategies for preparing high‐quality QDs such as ligand engineering, ion exchange, and purification separation. Then, compositions of SQD, PQD, CD, and corresponding optoelectronic properties are introduced, respectively. Next, the strengths and weaknesses of the four QDs structures are compared in detail. Finally, the flourishing development in various optoelectronic applications is separately demonstrated, and development degree of SQDs, PQDs, and CDs is compared to discover the most suitable application scenarios for each. On these bases, bottlenecks and opportunities are also put forwarded, hoping to stimulate more breakthroughs in this field.

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Synthesis of high quality PbS colloidal quantum dots by ultrasonic bath as photosensitizers in a TiO2 solar cell

Cited by 11 publications

References 52 publications

The Effect of PbS Colloidal Quantum Dots with CdS and ZnS Coating on Photovoltaic Properties

The Effect of PbS Colloidal Quantum Dots with CdS and ZnS Coating on Photovoltaic Properties

Recent Progress on Carbon Quantum Dots Based Photocatalysis

Colloidal Quantum Dots: Synthesis, Composition, Structure, and Emerging Optoelectronic Applications

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