High efficiency solar cells tailored using biomass-converted graded carbon quantum dots

Liu, Liming; Yu, Xueping; Yi, Zichuan; Chi, Feng; Wang, Honghang; Yuan, Yongfang; Li, Dongliang; Xu, Kai; Zhang, Xiaowen

doi:10.1039/c9nr05957a

Cited by 33 publications

(23 citation statements)

References 35 publications

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“…Carbon dots (CDs), an emerging class of carbon‐based luminescent nanomaterials, have attracted more and more attention and interest in recent years owing to their outstanding properties, such as chemical stability, [ 10,11 ] photostability, [ 12–14 ] biocompatibility, [ 15,16 ] and low toxicity. [ 17–19 ] Because of those distinct merits, CDs could be able to apply in extensive fields, such as drug delivery, [ 20,21 ] solar cell, [ 22 ] optoelectronic devices, [ 23,24 ] bioimaging, [ 25,26 ] and so on. Innumerable explorations in WLEDs filed are emerging repeatedly because of remarkable optical characteristic of CDs, such as strong UV absorption, tunable fluorescence emission, high thermal stability, and photostability.…”

Section: Introductionmentioning

confidence: 99%

Self‐Quenching‐Resistant Red Emissive Carbon Dots with High Stability for Warm White Light‐Emitting Diodes with a High Color Rendering Index

Zhang

Yang

Wan

et al. 2020

Advanced Optical Materials

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Due to the excellent characteristics of energy‐saving, environmentally friendly and long‐life, the solid‐state lighting based on white light‐emitting diodes (WLEDs) is an emerging technology to replace traditional lighting solutions. However, the lack of red component of the most established method for fabricating commercial WLEDs results in high correlated color temperature (CCT) and low color rendering index (CRI). Herein, red‐emitting carbon dots (R‐CDs) with self‐quenching‐resistant property are synthesized using melamine and dithiosalicylic acid as precursors. In addition, R‐CDs exhibit high thermal and photostability under high temperature and strong blue light irradiation. On the basis of the unique features of R‐CDs, a WLED is fabricated by combining a blue‐LED chip with commercial Ce3+:Y3Al5O12 and R‐CDs phosphors, which exhibits warm white light with a color coordinate of (0.41, 0.38), a high CRI of 92.7 and a CCT of 3827 K. Besides, the WLED exhibits good optical stability upon the increase of drive current from 20 to 100 mA. The results suggest R‐CDs can be used as a color converter to fabricate high‐quality warm WLEDs.

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Section: Introductionmentioning

confidence: 99%

Self‐Quenching‐Resistant Red Emissive Carbon Dots with High Stability for Warm White Light‐Emitting Diodes with a High Color Rendering Index

Zhang

Yang

Wan

et al. 2020

Advanced Optical Materials

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“…As well, a variety of CQDs and heteroatom doped CQDs have been investigated as sensitizers in DSSCs. [153][154][155][156][157] Liu et al…”

Section: Rama Et Al Fabricated Efficient Dsscs Based On the Zno Photoanode By Employing N-dopedmentioning

confidence: 99%

“…The resulting DSSCs with suitable energy level alignment exhibited high photovoltaic performance due to the enhanced electron extraction and broaden solar absorption region. 157 On the other side, there are few reports which demonstrated that CDs modified photoanode can promote the flat band potential of the metal oxide semiconductor and also enhance the amount of dye adsorption. 158 Herein, authors showed that the smaller-sized ZnO nanoparticles were greatly increased the dye adsorption of N719 dye because of its higher surface area which helps to faster the photo-induced charge separation process.…”

Section: Established That the Implementation Of The Energy-graded Designs Of Heteroatom Dopedmentioning

confidence: 99%

Carbon Quantum Dots for Energy Applications: A Review

Rasal

Yadav

et al. 2021

ACS Appl. Nano Mater.

161

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Carbon quantum dots (CQDs) are a class of carbon nanomaterials that have recently gained recognition as current entrants to traditional semiconductor quantum dots (QDs). CQDs have the desirable advantages of low toxicity, environmental friendliness, low cost, photostability, favorable charge transfer with enhanced electronic conductivity, and their comparable easy synthesis protocols. This article examines advancements in CQD research and development, with a focus on their synthesis, functionalization, and energy applications. Initially, various synthesis methods are discussed briefly with pros and cons. Herein, first top-down methods including arc discharge technique, laser ablation technique, plasma treatment, ultrasound synthesis technique, electrochemical technique, chemical exfoliation, and combustion were discussed briefly. The later section presents bottom-up (microwave synthesis, hydrothermal synthesis, thermal pyrolysis, and MOF template-assisted approach) and waste-derived CQDs synthesis methods. The next section is focused on the energy applications of CQDs including supercapacitors, lithium-ion batteries, photovoltaics, hydrogen (HER), and oxygen evolution reaction (OER). Finally, challenges and perspectives in this exciting and promising area are presented.

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“…For instance, Liu et al introduced S and N dopants in lotus root powder before subjecting them to hydrothermal treatment, which resulted in yellow and blue luminescent particles, respectively. 22 Lim et al used ethylenediamine as the N source with citric acid to prepare C QD by microwave irradiation for tuning the band-gap from blue to green. 23 In the current work, we have synthesized aqueous carbon QD via a simple hydrothermal route, exhibiting excellent luminescence under long-range UV light.…”

Section: Introductionmentioning

confidence: 99%

Real-time photovoltaic parameters assessment of carbon quantum dots showing strong blue emission

et al. 2022

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High efficiency solar cells tailored using biomass-converted graded carbon quantum dots

Abstract: The photovoltaic performances of solar cells have been significantly improved by incorporating biomass-converted carbon quantum dots with graded energy levels into sensitized devices.

Cited by 33 publications

References 35 publications

Self‐Quenching‐Resistant Red Emissive Carbon Dots with High Stability for Warm White Light‐Emitting Diodes with a High Color Rendering Index

Self‐Quenching‐Resistant Red Emissive Carbon Dots with High Stability for Warm White Light‐Emitting Diodes with a High Color Rendering Index

Carbon Quantum Dots for Energy Applications: A Review

Real-time photovoltaic parameters assessment of carbon quantum dots showing strong blue emission

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