Preparation of B-doped Si quantum dots embedded in SiNx films for Si quantum dot solar cells

2018 ◽  
Vol 32 (02) ◽  
pp. 1850003
Author(s):  
Xiaobo Chen ◽  
Peizhi Yang
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Photovoltaic Performance ◽  
Doping Amount ◽  
Photovoltaic Properties ◽  
Heterojunction Solar Cells ◽  
Si Quantum Dot ◽  
Quantum Dot Solar Cells ◽  
The Matrix ◽  
B Doping

Silicon quantum dots (Si-QDs) embedded B-doped SiN[Formula: see text] films were fabricated by magnetron co-sputtering. The effects of B content on the structural, optical and electrical properties of the films were studied. The study found that the amount of B dopant has no significant effect on the crystallization characteristics of the films. B atoms may be doped in the Si-QDs or exist in the silicon nitride or the interface between Si-QDs and the matrix. PL intensity increases with increasing B content, but increases at first and then decreases. The conductivity as a function of the dopant concentration increases at first from a value of 2.71 × 10[Formula: see text] S/cm to 5.83 × 10[Formula: see text] S/cm until 0.9 at.% and then decreases. By employing B-doped Si-QDs films, Si-QDs/c-Si heterojunction solar cells were fabricated and the effect of B doping concentration on the photovoltaic properties was studied. It was found that, with the increase of B doping amount, the photovoltaic performance is improved, when the B doping amount is 0.9 at.%, the efficiency reaches the highest value of 4.26%.

scholarly journals Impacts of Post-metallisation Processes on the Electrical and Photovoltaic Properties of Si Quantum Dot Solar Cells

2010 ◽  
Vol 5 (11) ◽  
pp. 1762-1767 ◽  
Author(s):  
Dawei Di ◽  
Ivan Perez-Wurfl ◽  
Angus Gentle ◽  
Dong-Ho Kim ◽  
Xiaojing Hao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Photovoltaic Properties ◽  
Si Quantum Dot ◽  
Quantum Dot Solar Cells

scholarly journals Ligand dependent oxidation dictates the performance evolution of high efficiency PbS quantum dot solar cells

2020 ◽  
Vol 4 (1) ◽  
pp. 108-115 ◽  
Author(s):  
David Becker-Koch ◽  
Miguel Albaladejo-Siguan ◽  
Vincent Lami ◽  
Fabian Paulus ◽  
Hengyang Xiang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Lead Sulfide ◽  
High Efficiency ◽  
Photovoltaic Performance ◽  
Continuous Illumination ◽  
Quantum Dot Solar Cells ◽  
The Stability ◽  
Pbs Quantum Dots ◽  
Pbs Quantum Dot

The stability of lead sulfide (PbS) quantum dots (QD) under continuous illumination in oxygenated environments depends on the choice of ligands, determining the evolution of photovoltaic performance of high efficiency PbS QD solar cells.

scholarly journals Annealing Effect on Photovoltaic Performance of CdSe Quantum-Dots-Sensitized TiO2Nanorod Solar Cells

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Yitan Li ◽  
Lin Wei ◽  
Ruizi Zhang ◽  
Yanxue Chen ◽  
Jun Jiao
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Solar Cell ◽  
Photovoltaic Performance ◽  
Annealing Treatment ◽  
Annealing Effect ◽  
Cdse Quantum Dots ◽  
Nanorod Arrays ◽  
Large Area ◽  
Photovoltaic Properties

Large area rutile TiO2nanorod arrays were grown on F:SnO2(FTO) conductive glass using a hydrothermal method at low temperature. CdSe quantum dots (QDs) were deposited onto single-crystalline TiO2nanorod arrays by a chemical bath deposition (CBD) method to make a photoelectrode. The solar cell was assembled using a CdSe-TiO2nanostructure as the photoanode and polysulfide solution as the electrolyte. The annealing effect on optical and photovoltaic properties of CdSe quantum-dots-sensitized TiO2nanorod solar cells was studied systematically. A significant change of the morphology and a regular red shift of band gap of CdSe nanoparticles were observed after annealing treatment. At the same time, an improved photovoltaic performance was obtained for quantum-dots-sensitized solar cell using the annealed CdSe-TiO2nanostructure electrode. The power conversion efficiency improved from 0.59% to 1.45% as a consequence of the annealing effect. This improvement can be explained by considering the changes in the morphology, the crystalline quality, and the optical properties caused by annealing treatment.

Narrow band gap conjugated polymer for improving the photovoltaic performance of P3HT:PCBM ternary blend bulk heterojunction solar cells

2015 ◽  
Vol 6 (6) ◽  
pp. 962-972 ◽  
Author(s):  
M. G. Murali ◽  
Arun D. Rao ◽  
Sarita Yadav ◽  
Praveen C. Ramamurthy
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Conjugated Polymer ◽  
Narrow Band ◽  
Bulk Heterojunction ◽  
Photovoltaic Performance ◽  
Ternary Blend ◽  
Photovoltaic Properties ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells

A new low band gap conjugated polymer PBDO-T-TDP is synthesized and used as a sensitizer in P3HT:PCBM based BHJ solar cells and its effect on their photovoltaic properties is investigated by blending them at various weight ratios.

Controllable synthesis of ultrasmall CuInSe2 quantum dots for photovoltaic application

RSC Advances ◽  
2014 ◽  
Vol 4 (64) ◽  
pp. 33855-33860 ◽  
Author(s):  
Chao-Feng Du ◽  
Ting You ◽  
Lei Jiang ◽  
Song-Qiu Yang ◽  
Kun Zou ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Quantum Dot ◽  
Solvothermal Method ◽  
Photovoltaic Performance ◽  
Controllable Synthesis ◽  
Photovoltaic Application ◽  
Quantum Dot Solar Cells ◽  
Facile Solvothermal Method

Ultrasmall CuInSe2 quantum dots were synthesized by a facile solvothermal method and used as a sensitizer in CdS/CuInSe2 quantum dot solar cells to improve the photovoltaic performance.

Size-controlled Si quantum dots embedded in B-doped SiNx/Si3N4 superlatice for Si quantum dot solar cells

2016 ◽  
Vol 28 (2) ◽  
pp. 1322-1327 ◽  
Author(s):  
Xiaobo Chen ◽  
Wen Yang ◽  
Peizhi Yang ◽  
Junbao Yuan ◽  
Fei Zhao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Quantum Dot ◽  
Si Quantum Dot ◽  
Quantum Dot Solar Cells ◽  
Size Controlled ◽  
Si Quantum Dots

scholarly journals Investigation of the Effects of Non-Conjugated Co-Grafts on the Spectroelectrochemical and Photovoltaic Properties of Novel Conjugated Graft Copolymers Based on Poly(3-hexylthiophene)

Polymers ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1064 ◽  
Author(s):  
Tomasz Jarosz ◽  
Karolina Gebka ◽  
Kinga Kepska ◽  
Mieczyslaw Lapkowski ◽  
Przemyslaw Ledwon ◽  
...  
Keyword(s):  
Solar Cells ◽  
Bulk Heterojunction ◽  
Average Molecular Weight ◽  
Photovoltaic Performance ◽  
Acid Methyl Ester ◽  
Hydroxyl Groups ◽  
Photovoltaic Properties ◽  
Heterojunction Solar Cells ◽  
Mobility Of Charge Carriers ◽  
Early Rise

A new type of polysiloxane copolymers, with conjugated–regioregular poly(3-hexylthiophene) (P3HT) and non-conjugated-poly(ethylene glycol) (PEG)-grafts have been synthesised, and their properties have been studied alongside those of the parent conjugated polymer (P3HT). Spectroelectrochemical and conductometric analyses revealed an early rise of the conductance of the polymers. Once spectral changes begin taking place, the conductance is stable, implying a loss of mobility of charge carriers, even though standard doping/dedoping patterns are observed. Prototype bulk heterojunction solar cells have been fabricated, based on P3HT/[6,6]-Phenyl-C61-butyric acid methyl ester (PCBM), as well as by substituting P3HT for each of the copolymers. The prototype solar cells achieved PCEs of up to 2.11%. This is one of the highest reported power conversion efficiency (PCE) for devices based on P3HT with low average molecular weight Mn = 12 kDa. Strong correlation between the structure of the copolymer and its photovoltaic performance was found. Elongation of PEG copolymer chain and the use of methyl group instead of terminal hydroxyl groups significantly improved photovoltaic performance.

scholarly journals Size-Dependent and Enhanced Photovoltaic Performance of Solar Cells Based on Si Quantum Dots

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4845
Author(s):  
Yunqing Cao ◽  
Ping Zhu ◽  
Dongke Li ◽  
Xianghua Zeng ◽  
Dan Shan
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Light Trapping ◽  
Spectral Response ◽  
Quantum Confinement Effect ◽  
Strong Dependence ◽  
Photovoltaic Performance ◽  
Heterojunction Solar Cells ◽  
Optical Absorption Measurement ◽  
Si Quantum Dots

Recently, extensive studies have focused on exploring a variety of silicon (Si) nanostructures among which Si quantum dots (Si QDs) may be applied in all Si tandem solar cells (TSCs) for the time to come. By virtue of its size tunability, the optical bandgap of Si QDs is capable of matching solar spectra in a broad range and thus improving spectral response. In the present work, size-controllable Si QDs are successfully obtained through the formation of Si QDs/SiC multilayers (MLs). According to the optical absorption measurement, the bandgap of Si QDs/SiC MLs shows a red shift to the region of long wavelength when the size of dots increases, well conforming to quantum confinement effect (QCE). Additionally, heterojunction solar cells (HSCs) based on Si QDs/SiC MLs of various sizes are presented and studied, which demonstrates the strong dependence of photovoltaic performance on the size of Si QDs. The measurement of external quantum efficiency (EQE) reveals the contribution of Si QDs to the response and absorption in the ultraviolet–visible (UV-Vis) light range. Furthermore, Si QDs/SiC MLs-based solar cell shows the best power conversion efficiency (PCE) of 10.15% by using nano-patterned Si light trapping substrates.

Doping- and size-dependent photovoltaic properties of p-type Si-quantum-dot heterojunction solar cells: correlation with photoluminescence

2010 ◽  
Vol 97 (7) ◽  
pp. 072108 ◽  
Author(s):  
Seung Hui Hong ◽  
Jae Hee Park ◽  
Dong Hee Shin ◽  
Chang Oh Kim ◽  
Suk-Ho Choi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Photovoltaic Properties ◽  
Heterojunction Solar Cells ◽  
Size Dependent ◽  
Si Quantum Dot ◽  
P Type
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