Zinc Tin Oxide (ZTO) electron transporting buffer layer in inverted organic solar cell

Oo, Than Zaw; Chandra, Ramesh; Yantara, Natalia; Prabhakar, Rajiv Ramanujam; Wong, Lydia Helena; Mathews, Nripan; Mhaisalkar, Subodh

doi:10.1016/j.orgel.2012.01.011

Cited by 61 publications

(37 citation statements)

References 20 publications

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“…Doping of ZnO is straightforward approach to tune its materials properties. [31][32][33][34][35][36][37] However, doping is generally difficult to control and reproduce. In fact, the materials properties of ZnO highly depend on the growth conditions, such as oxygen levels, impurities, growth rate and temperature, and even post annealing.…”

Section: Introductionmentioning

confidence: 99%

“…ZnO films grown by sol-gel methods have been widely used as an electron conductive layer in this device configuration. 31,33,34,36,43,47 Enhanced electrical conductivity of ZnO film may improve the performance of electron conductive ZnO layer in inverted polymer solar cell. By introducing a variety of methods of doping, several studies have focused on improving electrical conductivities of ZnO films for the applications of inverted polymer solar cells.…”

Section: Introductionmentioning

confidence: 99%

“…By introducing a variety of methods of doping, several studies have focused on improving electrical conductivities of ZnO films for the applications of inverted polymer solar cells. 31,33,34,36 Generally, ZnO grown by thermal ALD method provide better quality of film than ZnO grown by sol-gel method with improved structural order. While both the sol-gel and ALD growth of ZnO require high temperature processing, the PEALD method allows us to grow highquality ZnO film at relatively low temperature.…”

Section: Introductionmentioning

confidence: 99%

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Tuning of undoped ZnO thin film via plasma enhanced atomic layer deposition and its application for an inverted polymer solar cell

Jin

Neupane

et al. 2013

AIP Advances

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We studied the tuning of structural and optical properties of ZnO thin film and its correlation to the efficiency of inverted solar cell using plasma-enhanced atomic layer deposition (PEALD). The sequential injection of DEZn and O2 plasma was employed for the plasma-enhanced atomic layer deposition of ZnO thin film. As the growth temperature of ZnO film was increased from 100 °C to 300 °C, the crystallinity of ZnO film was improved from amorphous to highly ordered (002) direction ploy-crystal due to self crystallization. Increasing oxygen plasma time in PEALD process also introduces growing of hexagonal wurtzite phase of ZnO nanocrystal. Excess of oxygen plasma time induces enhanced deep level emission band (500 ∼ 700 nm) in photoluminescence due to Zn vacancies and other defects. The evolution of structural and optical properties of PEALD ZnO films also involves in change of electrical conductivity by 3 orders of magnitude. The highly tunable PEALD ZnO thin films were employed as the electron conductive layers in inverted polymer solar cells. Our study indicates that both structural and optical properties rather than electrical conductivities of ZnO films play more important role for the effective charge collection in photovoltaic device operation. The ability to tune the materials properties of undoped ZnO films via PEALD should extend their functionality over the wide range of advanced electronic applications

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tuning of undoped ZnO thin film via plasma enhanced atomic layer deposition and its application for an inverted polymer solar cell

Jin

Neupane

et al. 2013

AIP Advances

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“…A suitable electrode modification can improve the device efficiency and decrease the effect of degradation induced by the radiation and environmental conditions [3,4]. Additionally, it may allow the use of more stable metal-top electrodes, such as Ag and Au with devices in inverted structures, what also improves the device durability [5].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of open-circuit voltage on organic photovoltaic devices by Al-doped TiO2 modifying layer produced by sol–gel method

Valaski¹,

Arantes²,

Senna³

et al. 2014

Thin Solid Films

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“…ZTO has previously been used as an electron transport layer in organic optoelectronic devices 10,11 and in thin-film transistors as the channel material. 12,13 It was shown to be a promising indium-free n-type metal oxide with high electron mobility and transparency, as well as good temperature stability and mechanical integrity.…”

mentioning

confidence: 99%

Zinc tin oxide as high-temperature stable recombination layer for mesoscopic perovskite/silicon monolithic tandem solar cells

Werner

Walter

Rucavado

et al. 2016

Applied Physics Letters

114

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Perovskite/crystalline silicon tandem solar cells have the potential to reach efficiencies beyond those of silicon single-junction record devices. However, the high-temperature process of 500 °C needed for state-of-the-art mesoscopic perovskite cells has, so far, been limiting their implementation in monolithic tandem devices. Here, we demonstrate the applicability of zinc tin oxide as a recombination layer and show its electrical and optical stability at temperatures up to 500 °C. To prove the concept, we fabricate monolithic tandem cells with mesoscopic top cell with up to 16% efficiency. We then investigate the effect of zinc tin oxide layer thickness variation, showing a strong influence on the optical interference pattern within the tandem device. Finally, we discuss the perspective of mesoscopic perovskite cells for high-efficiency monolithic tandem solar cells.

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Zinc Tin Oxide (ZTO) electron transporting buffer layer in inverted organic solar cell

Cited by 61 publications

References 20 publications

Tuning of undoped ZnO thin film via plasma enhanced atomic layer deposition and its application for an inverted polymer solar cell

Tuning of undoped ZnO thin film via plasma enhanced atomic layer deposition and its application for an inverted polymer solar cell

Enhancement of open-circuit voltage on organic photovoltaic devices by Al-doped TiO2 modifying layer produced by sol–gel method

Zinc tin oxide as high-temperature stable recombination layer for mesoscopic perovskite/silicon monolithic tandem solar cells

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