Color-tunable transparent photovoltaics for onsite power production under sunlight and indoor light

Patel, Malkeshkumar; Youn, Sung-Min; Kim, Young-Kuk; Lee, Ki‐Bum; Kim, Sangho

doi:10.1016/j.mtener.2022.101203

Cited by 6 publications

(12 citation statements)

References 47 publications

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“…At the heterointerface of such a pn-junction, the built-in potential separates photogenerated electron-hole pairs into electron and hole carriers. [9][10][11][12] High optical transparency and electrical conductivity are required for all electrodes utilized in the fabrication of the TPV device. To collect hole carriers, the bottom electrode is made of fluorinedoped tin oxide (FTO) on a glass substrate.…”

Section: Resultsmentioning

confidence: 99%

“…The detailed fabrication processes can be found in the Experimental Section and our earlier publication. [11,12] For comparison, two kinds of top electrodes, bare AgNW networks and ZnO-coated AgNW networks (referred to as Z-AgNW, hereafter), were prepared on the NiO/ZnO heterojunctions. Figure 1c shows the optical transmittance spectra of our complete TPV device with the Z-AgNW top electrode and a NiO/ZnO heterojunction with a bare AgNW top electrode.…”

Section: Resultsmentioning

confidence: 99%

“…[2][3][4][5][6][7][8] For UV(wavelength <435 nm)-selective TPVs, wide-bandgap oxide semiconductors (WOSs), such as NiO, ZnO, and TiO 2 , can be integrated to form inorganic pn-junction solar cells. [4,6,[9][10][11][12][13] The large bandgap energy of WOS allows for the selective absorption of UV light from the sun. The materials used in WOS-based TPV devices are affordable, abundant on Earth, and extremely stable.…”

Section: Introductionmentioning

confidence: 99%

“…The scalable fabrication of WOS-TPVs is readily available, enabling the development of largescale modules. [9][10][11][12][13] The PCE will undoubtedly decrease if some sunlight is permitted to pass through the TPVs. The maximum achievable efficiency of a UV-selective TPV cell was restricted below 7%.…”

Section: Introductionmentioning

confidence: 99%

“…[5] The reported PCE values have not reached the theoretical value. [9][10][11][12][13] Clearly, it is imperative to investigate the critical factors to limit carrier generation and/or collection in TPVs.…”

Section: Introductionmentioning

confidence: 99%

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Boosting Wavelength‐Selective Absorption and Photocarrier Collection in NiO/ZnO Transparent Photovoltaic Heterojunctions by Plasmonic Ag Nanowire Top Electrodes

Song,

Patel,

Johannesson

et al. 2023

Adv Elect Materials

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Global climate change has compelled many to rely on photovoltaic (PV) technology to meet the highly demanding energy needs of urban areas. In particular, transparent photovoltaic (TPV) devices can be utilized for building windows, not only supplying electric energy but also improving the overall thermal efficiency of a building. In this work, NiO/ZnO wide‐bandgap oxide TPV heterojunctions are fabricated with Ag nanowire (NW) top electrodes and their PV characteristics are investigated. Special attention is paid to the contributions of surface plasmon (SP) excitation in AgNWs to the PV performance of the TPV device. Light polarized perpendicular to the AgNW axis induces a localized SP resonance in AgNWs at a wavelength of 400 nm, as shown by optical measurements and calculations. The investigation on how the plasmonic AgNWs affect real‐space electric potential distributions and local current‐voltage characteristics of the TPV devices uses Kelvin probe force microscopy and current‐sensing atomic force microscopy, respectively. The spatial redistribution and transport of photogenerated charge carriers strongly depend on the polarization as well as the wavelength of incident light. The results demonstrate that the AgNW‐based top electrodes boost the wavelength‐selective absorption and the effective collection of photocarriers in TPV devices.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Boosting Wavelength‐Selective Absorption and Photocarrier Collection in NiO/ZnO Transparent Photovoltaic Heterojunctions by Plasmonic Ag Nanowire Top Electrodes

Song,

Patel,

Johannesson

et al. 2023

Adv Elect Materials

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Enhanced Selective Contact Behavior in a‐Si:H/oxide Transparent Photovoltaic Devices via Dipole Layer Integration

Lopez‐Garcia,

Alvarez‐Suarez,

Ros

et al. 2024

Solar RRL

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Transparent photovoltaic (TPV) devices have the potential to revolutionize photovoltaic (PV) technology by enabling on‐site generation while minimizing visual impact. However, a major challenge in the development of TPV, as well as for many PV technologies, is the open‐circuit voltage (Voc) deficit, which limits their efficiency. In this work, the development of wide‐bandgap inorganic‐based TPV devices is reported with a focus on low‐cost, earth‐abundant, stable, and nontoxic materials. The device structure consists of an ultrathin hydrogenated amorphous silicon (a‐Si:H) absorber and metal‐oxide layers as selective contacts. Herein, novel approach is presented to significantly improve device performance, especially in Voc, by introducing molecular dipoles in the device electron‐transport layer. By incorporating polyethyleneimine or poly(amidoamine) G1 and G2 dipoles, Voc (from 410 mV up to 638 mV) is significantly increased without sacrificing the average photopic transmittance of the device, leading to a record efficiency for this particular approach in TPV. Measurements confirm excellent long‐term stability. This approach can potentially allow tuning the work function of the selective contacts enabling the use of low‐cost, earth‐abundant materials that are not optimized for a particular absorber. Furthermore, this solution circumvents the issue of low Voc by a simple interface treatment.

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A study of the optical properties of wide bandgap oxides for a transparent photovoltaics platform

Patel,

Ghosh,

Park

et al. 2023

J. Mater. Chem. C

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Color-tunable transparent photovoltaics for onsite power production under sunlight and indoor light

Cited by 6 publications

References 47 publications

Boosting Wavelength‐Selective Absorption and Photocarrier Collection in NiO/ZnO Transparent Photovoltaic Heterojunctions by Plasmonic Ag Nanowire Top Electrodes

Boosting Wavelength‐Selective Absorption and Photocarrier Collection in NiO/ZnO Transparent Photovoltaic Heterojunctions by Plasmonic Ag Nanowire Top Electrodes

Enhanced Selective Contact Behavior in a‐Si:H/oxide Transparent Photovoltaic Devices via Dipole Layer Integration

A study of the optical properties of wide bandgap oxides for a transparent photovoltaics platform

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