Enhanced performance of organic photovoltaic devices by incorporation of tetrapod‐shaped CdSe nanocrystals in polymer–fullerene systems

Ahmad, Razi; Arora, Vikas; Srivastava, Ritu; Sapra, Sameer; Kamalasanan, M. N.

doi:10.1002/pssa.201228347

Cited by 18 publications

(13 citation statements)

References 34 publications

(34 reference statements)

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“…The HOMO level of CdSe is located between the HOMOs of P3HT and PCBM. 15 The same is true for the LUMO levels. As a consequence, photo induced charge transfer is energetically allowed between P3HT and PCBM, CdSe and PCBM, as well as P3HT and CdSe.…”

Section: Resultsmentioning

confidence: 80%

Study of Schottky contact in binary and ternary hybrid CdSe quantum dot solar cells

Ramar

Suman

Manimozhi³

et al. 2014

RSC Adv.

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Hybrid binary and ternary organic solar cell devices were fabricated from P3HT-PCBM with CdSe quantum dot materials. The binary and ternary structured solar cells were designed with the combinations of P3HT-PCBM (device A), P3HT-CdSe (device B) and P3HT-CdSe-PCBM (device C). The absorption spectra of P3HT, CdSe and PCBM were analyzed in the wavelength range from 350 nm to 800 nm. The current density-voltage characteristics of the devices were performed in the dark and under illumination to study the conduction process and solar cell performance. The ideality factor of all the devices is more , respectively. The device can be modeled as the combination of two RC parallel circuits (one for the active layer, and the other for the interface) in series with contact resistance R s $ 0 ohm for device A, B and 60 ohm for device C.

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Section: Resultsmentioning

confidence: 80%

Study of Schottky contact in binary and ternary hybrid CdSe quantum dot solar cells

Ramar

Suman

Manimozhi³

et al. 2014

RSC Adv.

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“…The maximum open circuit voltage is given by the energy difference between highest occupied molecular orbital (HOMO) of donor and conduction band of acceptor . From the energy levels diagram we can see that the CB of Ag 2 S QDs is shifted upward with respect to bulk value due to quantum confinement effect.…”

Section: Resultsmentioning

confidence: 99%

Size‐Tunable Synthesis of Colloidal Silver Sulfide Nanocrystals for Solution‐Processed Photovoltaic Applications

et al. 2018

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Silver sulfide (Ag 2 S) quantum dots (QDs) exhibit promising candidature for low-cost solution-processed photovoltaic devices due to its narrow band gap, high optical absorption coefficient, and being composed of environment friendly materials. In this work, we have synthesized a series of different sized and nearly monodispersed Ag 2 S quantum dots by using thioacetamide as sulfur source at relatively low temperature (< 100 8C). Transmission electron microscopy and X-ray diffraction studies suggests that the as-synthesized QD S are nearly monodisperse and highly crystalline. The optical band gap and energy levels of valence and conduction bands were determined by absorption and ultraviolet photoemission spectroscopy, respectively. A hybrid solar cell based on blends of poly (3-hexylthiophene) and Ag 2 S QDs were fabricated and tested for photovoltaic application. The results indicate that Ag 2 S QDs are promising material for the fabrication of low cost and environment friendly polymer-QDs hybrid optoelectronics devices.

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“…In the same year, oleic acid-capped CdSe tetrapods were introduced in a P3HT/PC 71 BM mixture, in concentrations of 0, 0.5, 1, 1.5, and 2 wt%. 180 The device without CdSe tetrapods delivered a J sc of 4.78 mA cm À2 , a V oc of 0.51 V, a FF of 43.4% and a PCE of 1.07%. At 1.5 wt% CdSe concentration, the J sc increased to 6.11 mA cm À2 and the PCE improved to 1.5%.…”

Section: Ternary Systems Based On Polymer/ Fullerene/qd Mixturesmentioning

confidence: 97%

A comprehensive review of the application of chalcogenide nanoparticles in polymer solar cells

2014

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In this review the use of solution-processed chalcogenide quantum dots (CdS, CdSe, PbS, etc.) in hybrid organic-inorganic solar cells is explored. Such devices are known as potential candidates for low-cost and efficient solar energy conversion, and compose the so-called third generation solar cells. The incorporation of oxides and metal nanoparticles has also been successfully achieved in this new class of photovoltaic devices; however, we choose to explore here chalcogenide quantum dots in light of their particularly attractive optical and electronic properties. We address herein a comprehensive review of the historical background and state-of-the-art comprising the incorporation of such nanoparticles in polymer matrices. Later strategies for surface chemistry manipulation, in situ synthesis of nanoparticles, use of continuous 3D nanoparticles network (aerogels) and ternary systems are also reviewed.

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Enhanced performance of organic photovoltaic devices by incorporation of tetrapod‐shaped CdSe nanocrystals in polymer–fullerene systems

Cited by 18 publications

References 34 publications

Study of Schottky contact in binary and ternary hybrid CdSe quantum dot solar cells

Study of Schottky contact in binary and ternary hybrid CdSe quantum dot solar cells

Size‐Tunable Synthesis of Colloidal Silver Sulfide Nanocrystals for Solution‐Processed Photovoltaic Applications

A comprehensive review of the application of chalcogenide nanoparticles in polymer solar cells

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