Organic photovoltaic cells – promising indoor light harvesters for self-sustainable electronics

Lee, Harrison Ka Hin; Wu, Jiaying; Barbé, Jérémy; Jain, Sagar M.; Wood, Sebastian; Speller, Emily M.; Li, Zhe; Castro, Fernando A.; Durrant, James R.; Tsoi, Wing Chung

doi:10.1039/c7ta10875c

Cited by 192 publications

(161 citation statements)

References 48 publications

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“…[3,50] Morphologies of BCP and [BMIM]BF 4 were characterized using a polarized optical microscope (Leica, DM4000M). The lux levels of the fluorescence lamps were measured using a luxmeter, (LX-1330B) and the intensity calibration was carried out following the previous reports.…”

Section: Methodsmentioning

confidence: 99%

“…A schematic of perovskite decomposition detected by GIXRD is illustrated in Figure 4d. In contrast, no PbI 2 peak was observed in the aged sample of CH 3 Figure 5a-e and f-j shows the polarized optical microscope images of BCP and [BMIM]BF 4 films, respectively, with varied degradation time from 0 to 420 s in air. From the 2D GIXRD profiles as shown in Figure 4e,f, an obvious PbI 2 phase appeared after two weeks aging.…”

Section: Cell Stabilitymentioning

confidence: 99%

“…Except slight increases in the spectral range of 400-450 nm after spin-coating ETLs, there was no obvious change in the absorption spectra of the three samples. Particularly, the sample of CH 3 recombination mechanisms across the entire device, [18,43] was determined by fitting the TPV curves. All samples were excited with a wavelength at 550 nm.…”

Section: Figure 2amentioning

confidence: 99%

“…[3][4][5] Prior to mesoscopic structure, planar device architecture is currently widely employed to fabricate high-performance PSCs by its merits of low temperature and solution-processing. [3][4][5] In addition to the tailoring role of the energy levels, the upper interfacial film can also act as a significant protecting layer for the perovskite layer. Particularly, a suitable interfacial layer can boost the indoor photovoltaic performance by improving the carrier extraction and reducing the sheet resistance effectively.…”

Section: Introductionmentioning

confidence: 99%

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Interface Modification by Ionic Liquid: A Promising Candidate for Indoor Light Harvesting and Stability Improvement of Planar Perovskite Solar Cells

Zhao

Wang

et al. 2018

Advanced Energy Materials

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192

106

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Organic–inorganic hybrid perovskite solar cells (PSCs) are currently attracting significant interest owing to their promising outdoor performance. However, the ability of indoor light harvesting of the perovskites and corresponding device performance are rarely reported. Here, the potential of planar PSCs in harvesting indoor light for low‐power consumption devices is investigated. Ionic liquid of 1‐butyl‐3‐methylimidazolium tetrafluoroborate ([BMIM]BF4) is employed as a modification layer of [6,6]‐phenyl‐C61‐butyric acid methyl ester) (PCBM) in the inverted PSCs. The incorporation of [BMIM]BF4 not only paves the interface contact between PCBM and electrode, but also facilitates the electron transport and extraction owing to the efficient passivation of the surface trap states. Moreover, [BMIM]BF4 with excellent thermal stability can act as a protective layer by preventing the erosion of moisture and oxygen into the perovskite layer. The resulting devices present a record indoor power conversion efficiency (PCE) of 35.20% under fluorescent lamps of 1000 lux, and an impressive PCE of 19.30% under 1 sun illumination. The finding in this work verifies the excellent indoor performance of PSCs to meet the requirements of eco‐friendly economy.

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Section: Methodsmentioning

confidence: 99%

Section: Cell Stabilitymentioning

confidence: 99%

Section: Figure 2amentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Interface Modification by Ionic Liquid: A Promising Candidate for Indoor Light Harvesting and Stability Improvement of Planar Perovskite Solar Cells

Zhao

Wang

et al. 2018

Advanced Energy Materials

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192

106

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“…They not only have promising potential to be much lower cost than the silicon PV cells, but also have significantly better indoor performance. Indeed, for dye‐sensitized PV cells and organic PV cells, P max up to 17.5 and 14.6 μW cm −2 under 200 lux, and 101 and 78 μW cm −2 under 1000 lux have been shown, respectively …”

Section: Device Parameters Of the Best Ppv Cells Measured Under Diffementioning

confidence: 99%

Outstanding Indoor Performance of Perovskite Photovoltaic Cells – Effect of Device Architectures and Interlayers

et al. 2018

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Indoor photovoltaics is one of the best sustainable and reliable energy source for low power consumption electronics such as the rapidly growing Internet of Things. Perovskite photovoltaic (PPV) cells with three benchmark device architectures – mesoporous PPV (mPPV) and inverted PPV (iPPV) with alternative hole transporting layers (HTLs), and carbon‐based PPV (cPPV) are studied under a simulated indoor environment. The mPPV cell using typical Spiro‐OMeTAD as the HTL shows the highest maximum power density (Pmax) of 19.9 μW cm−2 under 200 lux and 115.6 μW cm−2 under 1000 lux (without masking), which is among the best of the indoor PV. Interestingly, when PTAA is used as the HTL in the mPPV cell, the Pmax drops to almost zero under indoor light environment while its performance under one sun remains similar. On the other hand, when PEDOT:PSS is replaced by Poly‐TPD as HTL in the iPPV cell, the Pmax under indoor light improves significantly and is comparable to that of the best mPPV cell. This significant difference in indoor performance correlates well with their leakage current. The HTL‐free cPPV cell, prepared by fully up‐scalable techniques, shows a promising Pmax of 16.3 and 89.4 μW cm−2 under 200 and 1000 lux, respectively. A practical scale 5 × 5cm2 cPPV module is fabricated as a demonstration for real applications.

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Organic Photovoltaic Cells and Modules for Applications under Indoor Lighting Conditions

Zimmermann

Würfel

2020

Indoor Photovoltaics

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Organic photovoltaic cells – promising indoor light harvesters for self-sustainable electronics

Cited by 192 publications

References 48 publications

Interface Modification by Ionic Liquid: A Promising Candidate for Indoor Light Harvesting and Stability Improvement of Planar Perovskite Solar Cells

Interface Modification by Ionic Liquid: A Promising Candidate for Indoor Light Harvesting and Stability Improvement of Planar Perovskite Solar Cells

Outstanding Indoor Performance of Perovskite Photovoltaic Cells – Effect of Device Architectures and Interlayers

Organic Photovoltaic Cells and Modules for Applications under Indoor Lighting Conditions

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