Broadband near-infrared quantum-cutting by cooperative energy transfer in Yb3+–Bi3+ co-doped CaTiO3 for solar cells

Lin, Lehang; Chen, Junqiang; Deng, Chao; Tang, Li; Chen, Dong-Ju; Meng, Jian; Cao, Lei

doi:10.1016/j.jallcom.2015.04.031

Cited by 29 publications

(10 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They have explained the mechanisms to be CET from Bi 3+ to Yb 3+ . Similarly, the QC mechanism was reported by several workers in different host materials such as Y 2 O 3 , YNbO 4 , and CaTiO 3 . − However, QC from these ions codoped in the gadolinium tungstate host is not reported in the literature. The host material plays an important role in the emission process.…”

Section: Introductionsupporting

confidence: 59%

Enhanced Quantum Cutting via Li⁺ Doping from a Bi³⁺/Yb³⁺-Codoped Gadolinium Tungstate Phosphor

et al. 2016

View full text Add to dashboard Cite

The Bi/Yb-codoped gadolinium tungstate phosphor has been synthesized through a solid-state reaction method. The structural characterization reveals the crystalline nature of the phosphor. The Bi-doped phosphor emits visible radiation from the blue to red regions upon excitation with 330 and 355 nm. The addition of Yb to the Bi-doped phosphor reduces the emission intensity in the visible region and emits an intense near-infrared (NIR) photon centered at 976 nm through a quantum-cutting (QC) phenomenon. This is due to cooperative energy transfer (CET) from the P level of Bi to the F level of Yb. The presence of Li ions in the Bi/Yb-codoped phosphor enhances the emission intensity in the NIR region up to by 3 times, whereas the emission intensity in the visible region is significantly reduced. The energy transfer (ET) from the Bi ions to the Yb ions is confirmed by lifetime measurements, and the lifetime for the P level of Bi decreases continuously with increasing Yb concentration. The ET efficiency (η) and corresponding QC efficiency (η) are calculated and found to be 29% and 129%, respectively. The presence of Li enhances the QC efficiency of the phosphor up to 43%. Thus, the Bi/Yb/Li-codoped phosphor is a promising candidate to enhance the efficiency of a crystalline-silicon-based solar cell through spectral conversion.

show abstract

Section: Introductionsupporting

confidence: 59%

Enhanced Quantum Cutting via Li⁺ Doping from a Bi³⁺/Yb³⁺-Codoped Gadolinium Tungstate Phosphor

et al. 2016

View full text Add to dashboard Cite

show abstract

“…After the ball milling, the homogeneous mixture was dried at ordinary temperature and divided into various parts for calcination at different temperatures from 600 to 1500°C for 4-30 h to optimize the pure phase. These phosphors were then structurally and optically characterized [26]. The perovskites prepared using this method have particles size in the submicrometer range [27].…”

Section: Mechanical Ball-milling Methodsmentioning

confidence: 99%

Synthesis Techniques and Applications of Perovskite Materials

Kumar¹,

Yadav²,

Monika³

et al. 2020

Perovskite Materials, Devices and Integration

View full text Add to dashboard Cite

Perovskite material is a material with chemical formula ABX 3 -type, which exhibits a similar crystal structure of CaTiO 3 . In this material, A and B are metal cations with ionic valences combined to +6, e.g., Li + :Nb 5+ ; Ba 2+ :Ti 4+ ; Sr 2+ :Mn 4+ ; La 3+ :Fe 3+ , and X is an electronegative anion with ionic valence (−2), such as O 2− , S 2− , etc. The properties of a perovskite material strongly depend on the synthesis route of materials. The perovskite materials may be oxides (ABO 3 :CaMnO 3 ), halides (ABX 3 : X = Cl, Br, I), nitrides (ABN 3 :CaMoN 3 ), sulfides (ABS 3 :LaYS 3 ), etc., and they may exist in different forms, such as powders, thin films, etc. There are various routes for the synthesis of several perovskites, such as solid-state synthesis, liquid-state synthesis, gas-state synthesis, etc. In this chapter, we discuss various techniques for the synthesis of oxide perovskites in powder form using solid-, liquid-, and gas-state synthesis methods, and we also present an overview on the other type of perovskite materials. The X-ray diffraction, scanning electron microscopy, and optical techniques are used to study the purity of crystallographic phase, morphology, and photoluminescence properties of the perovskite materials. Some applications of different perovskite materials are also discussed.

show abstract

“…The increasing demand for solar energy, due to its green and inexhaustible advantage, has put how to improve the photovoltaic conversion efficiency of solar cells at the forefront of research [1]. The mismatch between the solar spectrum and the band gap energy of silicon semiconductor limits the photovoltaic conversion efficiency of silicon-based solar cells, because photons with energy lower than the band gap cannot be absorbed, while for photons with energy larger than the band gap, the excess energy is lost by thermalization of hot charge carriers [2][3][4]. Herein, there are many routes to improve the conversion efficiency, and one of them is the downconversion (DC) [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Efficient near-infrared downconversion and energy transfer mechanism in Tb^4+-Yb^3+ co-doped NaYF_4 nanoparticles

Zheng

Lin

et al. 2016

Opt. Mater. Express

View full text Add to dashboard Cite

Tb 4+-Yb 3+ co-doped NaYF 4 nanoparticles (NPs) are prepared by sintering the assynthesized NaYF 4 :Tb 3+ , Yb 3+ NPs at 380°C under air atmosphere. The oxidization of Tb 3+ ions to Tb 4+ ions in NaYF 4 NPs after sintering is demonstrated through X-ray photoelectron spectroscopy (XPS). The near-infrared (NIR) downconversion (DC) luminescence of Tb 4+-Yb 3+ couple is measured and investigated for the first time. The results show that DC luminescence of Tb 4+-Yb 3+ couple enhance obviously compared with Tb 3+-Yb 3+ couple in assynthesized sample. The enhancement factor is about 14 and 19 excited at 379nm and 487nm, respectively. On analyzing the exponential dependence of NIR fluorescence intensity on the pumping power, we reveal that the energy transfer (ET) mechanism from Tb 4+ to Yb 3+ in NaYF 4 NPs occurs by the single-step ET process. Our study may provide a promising DC layer on the top of silicon-based solar cells to improve the photovoltaic conversion efficiency.

show abstract

Broadband near-infrared quantum-cutting by cooperative energy transfer in Yb3+–Bi3+ co-doped CaTiO3 for solar cells

Cited by 29 publications

References 35 publications

Enhanced Quantum Cutting via Li⁺ Doping from a Bi³⁺/Yb³⁺-Codoped Gadolinium Tungstate Phosphor

Enhanced Quantum Cutting via Li⁺ Doping from a Bi³⁺/Yb³⁺-Codoped Gadolinium Tungstate Phosphor

Synthesis Techniques and Applications of Perovskite Materials

Efficient near-infrared downconversion and energy transfer mechanism in Tb^4+-Yb^3+ co-doped NaYF_4 nanoparticles

Contact Info

Product

Resources

About

Broadband near-infrared quantum-cutting by cooperative energy transfer in Yb3+–Bi3+ co-doped CaTiO3 for solar cells

Cited by 29 publications

References 35 publications

Enhanced Quantum Cutting via Li+ Doping from a Bi3+/Yb3+-Codoped Gadolinium Tungstate Phosphor

Enhanced Quantum Cutting via Li+ Doping from a Bi3+/Yb3+-Codoped Gadolinium Tungstate Phosphor

Synthesis Techniques and Applications of Perovskite Materials

Efficient near-infrared downconversion and energy transfer mechanism in Tb^4+-Yb^3+ co-doped NaYF_4 nanoparticles

Contact Info

Product

Resources

About

Enhanced Quantum Cutting via Li⁺ Doping from a Bi³⁺/Yb³⁺-Codoped Gadolinium Tungstate Phosphor

Enhanced Quantum Cutting via Li⁺ Doping from a Bi³⁺/Yb³⁺-Codoped Gadolinium Tungstate Phosphor