Strong Efficiency Improvements in Ultra‐low‐Cost Inorganic Nanowire Solar Cells

Musselman, Kevin P.; Wisnet, Andreas; Iza, Diana C.; Hesse, Holger C.; Scheu, Christina; MacManus‐Driscoll, Judith L.; Schmidt‐Mende, Lukas

doi:10.1002/adma.201001455

Cited by 187 publications

(177 citation statements)

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“…Spin coating is a low-cost method, and electrodeposition is a method for homogeneous thin film formation, which is essential for the mass production of any solar cells. The low cost methods have been already reported [3,36,37], and the spin coating of Al-doped ZnO in the present work would be also one of the useful and easy fabrication methods. In the present work, The ZnO/Cu 2 O solar cells prepared in the present study were investigated by structural analysis, optical absorption, and photovoltaic measurements.…”

Section: Introductionmentioning

confidence: 76%

“…Thickness effects were discussed in the previous works [36,37,40], and the effect of thickness reduction or decomposition of ZnO during electrodeposition of Cu 2 O layer, which would be dependent on the several electrodeposition conditions. Optimization of thickness of active layers in the present solar cells could increase the efficiency of the solar cells.…”

Section: Methodsmentioning

confidence: 99%

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Microstructures and Photovoltaic Properties of Zn(Al)O/Cu2O-Based Solar Cells Prepared by Spin-Coating and Electrodeposition

et al. 2014

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Abstract:Copper oxide (Cu 2 O)-based heterojunction solar cells were fabricated by spin-coating and electrodeposition methods, and photovoltaic properties and microstructures were investigated. Zinc oxide (ZnO) and Cu 2 O were used as n-and p-type semiconductors, respectively, to fabricate photovoltaic devices based on In-doped tin oxide/ZnO/Cu 2 O/Au heterojunction structures. Short-circuit current and fill factor increased by aluminum (Al) doping in the ZnO layer, which resulted in the increase of the conversion efficiency. The efficiency was improved further by growing ZnO and Cu 2 O layers with larger crystallite sizes, and by optimizing the Al-doping by spin coating.

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Section: Introductionmentioning

confidence: 76%

Section: Methodsmentioning

confidence: 99%

Microstructures and Photovoltaic Properties of Zn(Al)O/Cu2O-Based Solar Cells Prepared by Spin-Coating and Electrodeposition

et al. 2014

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“…[http://dx.doi.org/10.1063/1.4771681] Cu 2 O is attracting great interest in a wide variety of applications, including as anode in batteries, 1 gas sensors, 2 catalysis, 3 biosensing applications, 4 resistive RAM, 5 photovoltaics, 6 photoelectrochemical water splitting, 7 p-type thin film transistors (TFT) [8][9][10] and CMOS; 11 as well as in other all-oxide transparent electronic applications. 12 When used as a p-type material, the simple binary composition of Cu 2 O gives it a processing advantage over the more complicated ternary oxides (e.g.…”

confidence: 99%

Growth of ∼5 cm2V−1s−1 mobility, p-type Copper(I) oxide (Cu2O) films by fast atmospheric atomic layer deposition (AALD) at 225°C and below

Muñoz‐Rojas¹,

Jordan²,

Yeoh³

et al. 2012

AIP Advances

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Phase pure, dense Cu2O thin films were grown on glass and polymer substrates at 225°C by rapid atmospheric atomic layer deposition (AALD). Carrier mobilities of 5 cm2V−1s−1 and carrier concentrations of ∼1016 cm−3 were achieved in films of thickness 50 - 120 nm, over a >10 cm2 area. Growth rates were ∼1 nm·min−1 which is two orders of magnitude faster than conventional ALD.. The high mobilities achieved using the atmospheric, low temperature method represent a significant advance for flextronics and flexible solar cells which require growth on plastic substrates

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“…The absorption coefficient was calculated assuming a direct proportionality between FKM and α [27,28]. 2 (1 )…”

Section: Absorption Edge Red-shiftmentioning

confidence: 99%

“…The use of nanorods (NR) in photovoltaic solar cells may increase their efficiency by decoupling light propagation and carrier separation into orthogonal directions [1,2]. One of the most promising candidates for these NR based solar cells is ZnO.…”

Section: Introductionmentioning

confidence: 99%

Optical absorption enhancement in sensitized ZnO nanorods for solar cells

et al. 2015

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RESUMENSe estudiaron las Propiedades Ópticas (PO) de Nanovarillas (NV) de ZnO sensibilizadas con diferentes semiconductores en nanoestructuras núcleo-corteza, comparándolas con las PO de NV de ZnO. Las medidas experimentales de Transmitancia y Reflectancia Difusa muestran un incremento en la absorción de luz en el espectro solar y la aparición de nuevos bordes de absorción (BA). Las medidas se compararon con simulaciones numéricas basadas en Aproximación de Medio Efectivo (Bruggeman). Las simulaciones corresponden con las medidas reproduciendo la dependencia con el contenido de sensibilizante. Para CdTe se observa un aumento de la absorción con la cantidad del sensibilizante, siendo los cambios mayores para iguales cambios en las fracciones de llenado respecto al CdS. Las mediciones experimentales muestran corrimientos en las posiciones de los BA entre 2.34 eV y 2.66 eV para CdS. Estos corrimientos no pueden explicarse sólo por cambios en el contenido de sensibilizante o por los efectos de confinamiento en las nanoestructuras. Similar es el comportamiento del BA de muestras sensibilizadas con CdTe que se ubica entre 1.31 eV y 1.36 eV, analizadas por Transmitancia, mientras que para las mismas muestras este BA se encuentra en 1.57 eV y 1.49 eV, respectivamente, según el método de Kubelka-Munk de la Reflectancia. Además se observa el BA de la banda split-off en 2.55 eV y 2.28 eV. Estos corrimientos pueden asociarse a un incremento de la absorción sub-bandgap debido al aumento del recorrido libre medio de la luz en la estructura.Palabras clave: Nanoestructuras, ZnO, Nanohilos, Celdas Solares ABSTRACTThe Optical Properties of ZnO Nanorods (NR) sensitized with different semiconductors in Core-Shell nanostructures were studied, comparing them with those of bare ZnO NR. Experimental measurements of Transmittance and Diffuse Reflectance show an increased light absorption at the solar spectrum and the appearances of new absorption edges (AE). The measurements are compared with numerical simulations based on Bruggeman Effective Medium Approximation. An increased absorption with the sensitizer content is observed. For similar changes in filling fractions, CdTe presents higher changes in absorption than CdS. Shifts in the AE are observed experimentally (e.g. between 2.34 eV and 2.66 eV for CdS). These shifts cannot be assigned to sensitizer content or confinement effects. A similar behaviour is observed for CdTe in which the AE measured by transmittance is between 1.31 eV and 1.36 eV, while the one obtained from Kubelka-Munk analysis of reflectance is, for the same samples, 1.57 eV and 1.49 eV, respectively. Moreover, the split-off AE is also observed at 2.55 eV and 2.28 eV. The observed large red-shifts could be associated with an enhancement of the subbandgap absorption due to an increase in the light free path at the core-shell nanostructure.PEREYRA, C.J.; FERRER, F.; GÓMEZ,C.; CAMPO, L.; MAROTTI, R.E.; MARTIN, F.; LEINEN, D.; BARRADO, J.R.; DALCHIE-LE, E.A. revista Matéria, v.20, n.3, pp. 747 -756, 2015. 748

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Strong Efficiency Improvements in Ultra‐low‐Cost Inorganic Nanowire Solar Cells

Cited by 187 publications

References 34 publications

Microstructures and Photovoltaic Properties of Zn(Al)O/Cu2O-Based Solar Cells Prepared by Spin-Coating and Electrodeposition

Microstructures and Photovoltaic Properties of Zn(Al)O/Cu2O-Based Solar Cells Prepared by Spin-Coating and Electrodeposition

Growth of ∼5 cm2V−1s−1 mobility, p-type Copper(I) oxide (Cu2O) films by fast atmospheric atomic layer deposition (AALD) at 225°C and below

Optical absorption enhancement in sensitized ZnO nanorods for solar cells

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