Hybrid polymer-CdSe solar cells with a ZnO nanoparticle buffer layer for improved efficiency and lifetime

Liu, Qian; Yang, Jun; Zhou, Ru; Tang, Aiwei; Zheng, Ying; Tseng, T.K.; Bera, Debasis; Xue, Jiangeng; Holloway, Paul H.

doi:10.1039/c0jm03799k

Cited by 97 publications

(86 citation statements)

References 26 publications

(26 reference statements)

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“…Kesterite was rst reported by Ito and Nakazawa in 1988 [2]. Research on methods to prepare kesterite thin lms can be classi ed into three types: (1) Research whose purpose is to synthesize materials, for example, nanoparticles [3][4][5]. (2) Research about deposition of material once it is synthesized.…”

Section: Introductionmentioning

confidence: 99%

Novel Evaporation Process for Deposition of Kesterite Thin Films Synthesized by Solvothermal Method

Estrada-Ayub

Román-Aguirre

Ramírez

et al. 2017

Advances in Materials Science and Engineering

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Kesterite, a quaternary compound of Cu 2 ZnSnS 4 , is a promising option as a material absorber to reduce the cost of photovoltaic solar cells. e solvothermal method is a way to synthesize nanoparticles of this material. In this work, once synthesized, particles were deposited on a substrate through evaporation, and their morphological, structural, and optical properties were studied. Results show that changes of precursor ratios during solvothermal synthesis result in a modi cation of particle morphology but not on its size. e deposition of already synthesized kesterite through evaporation preserves kesterite structure and permits the formation of a homogenous lm on a substrate. Optical re ectance and transmittance measurements allowed estimating the band-gap energy between 1.41 and 1.46 eV for representative samples, which is near the optimum for the absorber material.

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Section: Introductionmentioning

confidence: 99%

Novel Evaporation Process for Deposition of Kesterite Thin Films Synthesized by Solvothermal Method

Estrada-Ayub

Román-Aguirre

Ramírez

et al. 2017

Advances in Materials Science and Engineering

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“…To fabricate OSCs with inverted device geometry, ZnO nanoparticles or colloids are spin coated onto TCO substrates. Solution-processed ZnO nanostructures are obtained from precursor solutions containing Zinc salts through methods such as sol-gel [59], solvothermal [60], or a hydrothermal process [61]. Moreover, ZnO NPs are readily synthesized from zinc acetate dehydrate and used as ETL [62][63][64].…”

Section: Cathode Interfacial Layers For Oscsmentioning

confidence: 99%

Metal oxide semiconducting interfacial layers for photovoltaic and photocatalytic applications

Elumalai

Chellappan

Jose

et al. 2015

Mater Renew Sustain Energy

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The present review rationalizes the significance of the metal oxide semiconductor (MOS) interfaces in the field of photovoltaics and photocatalysis. This perspective considers the role of interface science in energy harvesting using organic photovoltaics (OPVs) and dye-sensitized solar cells (DSSCs). These interfaces include large surface area junctions between photoelectrodes and dyes, the interlayer grain boundaries within the photoanodes, and the interfaces between photoactive layers and the top and bottom contacts. Controlling the collection and minimizing the trapping of charge carriers at these boundaries is crucial to overall power conversion efficiency of solar cells. Similarly, MOS photocatalysts exhibit strong variations in their photocatalytic activities as a function of band structure and surface states. Here, the MOS interface plays a vital role in the generation of OH radicals, which forms the basis of the photocatalytic processes. The physical chemistry and materials science of these MOS interfaces and their influence on device performance are also discussed.

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“…7,9 An effective way to control the light field distribution in the active region of a junction is to introduce a thin optical spacer such as titania (TiOx) or zinc oxide (ZnO). [10][11][12][13] The spacer works by tuning the spatial and spectral distribution of the optical field interference maximum to create the largest number of free carriers at a position within the junction where they have highest probability of collection (usually away from the electrode interfaces). Metal oxide spacers may also provide additional benefits, including: (i) serving as electron transporting and hole blocking layers thereby offering selective carrier extraction at the electrodes; and (ii) inhibiting the ingress of environmental water and oxygen into the active layer thus leading to longer operational device lifetimes.…”

mentioning

confidence: 99%

“…8 The ZnO layers were deposited by spin-casting ZnO nanoparticles dissolved in 2-propanol. 11 Finally, 80 nm of Al was thermally evaporated as the top electrode under a pressure of 10 À6 mbar. All procedures except the PEDOT:PSS processing were carried out in a nitrogen filled glove box operating under low oxygen and moisture conditions (<0.1 ppm).…”

mentioning

confidence: 99%

Spectral response tuning using an optical spacer in broad-band organic solar cells

Zhang

Pandey

Tao

et al. 2013

Applied Physics Letters

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The effect of a zinc oxide optical spacer layer in broad-band polymer-fullerene solar cells is presented. The complimentary absorption in the donor and acceptor components allows photocurrent generation through photoinduced electron and hole-transfer mechanisms. Simulations of the optical-field distribution reveal that an optical spacer can be used to tune the spectral response to favor one photocurrent generation pathway via enhanced absorption in either the acceptor or donor component. Experimental results confirm these simulations, and the spacer is shown to enhance overall photocurrent in devices with thin active layers (<60 nm), with much less effect in thicker junctions (>90 nm).

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Hybrid polymer-CdSe solar cells with a ZnO nanoparticle buffer layer for improved efficiency and lifetime

Cited by 97 publications

References 26 publications

Novel Evaporation Process for Deposition of Kesterite Thin Films Synthesized by Solvothermal Method

Novel Evaporation Process for Deposition of Kesterite Thin Films Synthesized by Solvothermal Method

Metal oxide semiconducting interfacial layers for photovoltaic and photocatalytic applications

Spectral response tuning using an optical spacer in broad-band organic solar cells

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