Lead sulfide nanocrystal: conducting polymer solar cells

Watt, Andrew; Blake, D. F.; Warner, Jamie H.; Thomsen, Elizabeth; Tavenner, E.; Rubinsztein‐Dunlop, Halina; Meredith, Paul

doi:10.1088/0022-3727/38/12/023

Cited by 152 publications

(109 citation statements)

References 25 publications

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“…Also, their absorption edge can be tuned to anywhere between near infrared to violet (0.4 μm) covering the entire visible spectrum [5]. The combination of such properties makes PbS suitable for efficient electroluminescent devices, such as inorganic-organic bulk hybrid solar cells [6,7], tunable near-infrared detectors [8], and solid state lasers [9]. Further, at a given particle size, the third-order nonlinear optical response of PbS NPs is 30 times greater than that of gallium arsenide (GaAs) and 1000 times greater than that of cadmium sulphide (CdSe), which enables them to be a potential candidate for photonic and optical switching applications [10].…”

Section: Introductionmentioning

confidence: 99%

Room Temperature Synthesis of Aminocaproic Acid-Capped Lead Sulphide Nanoparticles

Patel¹,

Mighri

Ajji³

2012

MSA

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Aminocaproic acid (ACA) mixed methanolic lead acetate-thiourea (PbAc-TU) complex as precursor for fabrication of lead sulphide (PbS) nanoparticles (NPs) has been explained. The size, structure and morphology of as-prepared ACAcapped PbS NPs were systematically characterized by scanning electron microscopy (SEM), Transmission electron microscopy (TEM), X-ray diffraction (XRD), Uv-vis spectroscopy and Brunauer-Emmett-Teller (BET) techniques. The obtained results show that the synthesized PbS NPs are nanocrystalline, size quantized and their agglomeration shows a mesoporous network of 8.7 nm in pore size. The binding nature of ACA molecules on PbS surface was studied by thermo gravimetric analysis (TGA), Fourier transform infrared (FTIR) and X-ray photoelectron (XPS) techniques. Results indicate that ACA acts as a soft template that restricts the growth of PbS NPs through its binding to Pb surface via nitrogen lone pair.

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Section: Introductionmentioning

confidence: 99%

Room Temperature Synthesis of Aminocaproic Acid-Capped Lead Sulphide Nanoparticles

Patel¹,

Mighri

Ajji³

2012

MSA

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“…Table 1 shows that nanocrystal PbS/MEH-PPV devices fabricated with lower molecular weight MEH-PPV (80 KDa) show significantly higher power conversion efficiencies of ∼ 1%. 17 That is three orders of magnitude better than similar devices made with the higher molecular weight MEH-PPV. This drop in power conversion effciency compared to lower molecular weight MEH-PPV may be the result of a breakdown of the percolation network due to poor nanocrystal packing.…”

Section: Solar Power Conversion Efficiencymentioning

confidence: 96%

Lead sulfide nanocrystal/conducting polymer solar cells

et al. 2005

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Organic photovoltaics promise a number of key advantages over conventional silicon, namely: Ease of processing, low cost, physical flexibility and large area coverage. However, the solar power conversion efficiencies of pure polymer devices are poor. When nanocrystals are blended with a conducting polymer to create a bulk heterojunction structure the optical and electronic properties of both materials combine synergistically to enhance overall performance. We have investigated the dependence of efficiency on the polymer molecular weight, together with the role of nanocrystals in the photogeneration of charge carriers in bulk heterojunction solar cells. We found that a high molecular weight polymer resulted in the formation of small nanocrystals, and that nanocrystals act to enhance the natural spectral response of the polymer.

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“…In another words, light is absorbed by the photoactive layer which leads to the formation of excitons and free charge carrier generation at the interface of both semiconductor constituents. Various polymer-QD hybrid solar cells have been fabricated using semiconducting polymers like MEH-PPV [98], P3HT [99], PTB7 [100], PTB7-Th [101] and poly[2,6-(4,4-bis-(2-ethyhexyl)-4H-cyclopenta [2,1-b;3,4-b0]-dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)] (PCDTBT) [102,103], and semiconductor nanocrystals such as CdSe, CuInS 2 , CdS, InP [100], ZnO [101], CdSeTe [17] and PbSe [104] or PbS [98]. Photovoltaic characteristics of various QD sensitized polymeric solar cells have been briefly presented in Table 1.…”

Section: Hybrid Qd Based Solar Cellsmentioning

confidence: 99%

Recent Developments in Quantum Dots/CNT Co-Sensitized Organic Solar Cells

Soltani¹,

Katbab²,

Ameri³

2017

J Material Sci Eng

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Polymer solar cells (PSCs) are emerging alternative candidates to the standard silicone technology for green and renewable energy generation owing to their flexibility and solution processability. Bulk heterojunction (BHJ) organic solar cells (OSCs) based on conjugated semiconducting polymers as donor (D) and fullerene derivatives as acceptor (A) offer large D/A interfacial area, which overcomes the short exciton diffusion length. Although, recent advances in narrow band gap semiconducting polymers have led to the improvement in power conversion efficiency of organic photovoltaics (OPVs) beyond 10%, inefficient charge separation and low carrier mobility as well as negligible photon harvesting in near-infrared (NIR) and/or infrared (IR) region of the solar spectrum have still remained as bottle neck for ultimate performance of OPVs. Most PSCs only absorb the UV-visible part of the solar spectrum, leading to the low light harvesting efficiency. Hence, solution processed photoactive materials comprising nanostructured semiconducting inorganic quantum dots (QDs) as sensitizer have attracted great attention to improve energy conversion efficiency of the OPVs. This is attributed to the outstanding optoelectronic properties of QDs such as band gap tunability, potential NIR photons harvesting and multi exciton generation (MEG). However, the main shortcoming of inorganic QDs based OSCs is randomly hopping charge transport among discrete QD particles, which can be tackled through hybridization with one dimensional (1D) electrically conductive nanostructured materials such as carbon nanotube (CNT). By this way, CNT particles would behave as support for anchoring the light harvesting semiconductor QDs, leading to the enhancement of the exciton dissociation and charge transport towards the corresponding electrodes. Recently, manufacturing PSCs co-sensitized by QD loaded CNT has been shown as a promising direction to maximize performance of the device. This article reviews the recent developments in enhancement of OPVs" performance by utilization of high efficient light harvesting QDs and/or their hybrid with 1D CNTs.

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Lead sulfide nanocrystal: conducting polymer solar cells

Cited by 152 publications

References 25 publications

Room Temperature Synthesis of Aminocaproic Acid-Capped Lead Sulphide Nanoparticles

Room Temperature Synthesis of Aminocaproic Acid-Capped Lead Sulphide Nanoparticles

Lead sulfide nanocrystal/conducting polymer solar cells

Recent Developments in Quantum Dots/CNT Co-Sensitized Organic Solar Cells

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