Slot-Die-Coated Ternary Organic Photovoltaics for Indoor Light Recycling

Farahat, Mahmoud E.; Laventure, Audrey; Anderson, Michael A.; Mainville, Mathieu; Tintori, Francesco; Leclerc, Mario; Ratcliff, Erin L.; Welch, Gregory C.

doi:10.1021/acsami.0c11809

Cited by 26 publications

(23 citation statements)

References 67 publications

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“…[13] As shown in Figure 2e, the a-Si (amorphous silicon) and c-Si cells showed PCEs of 1. 45 2f. The significant PCE improvement of OPV under LED illumination indicates it is extremely suitable for indoor application.…”

Section: Why Can Iopvs Outperform Silicon-based Solar Cells Under Indoor Light Sources?mentioning

confidence: 99%

An Overview of High‐Performance Indoor Organic Photovoltaics

Liu

Luo

et al. 2021

ChemSusChem

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In recent years, indoor organic photovoltaics (IOPVs) have attracted increasing attention because of their ability to power microelectronic devices and sensors, especially for the internet of things (IoT). In contrast with silicon‐based indoor PV, the IOPVs exhibit better performance due to their tunable bandgap via molecular design, which could achieve a better spectrum matched with the lighting sources. Based on the simulated power conversion efficiency (PCE) in theory, the maximum value can achieve over 50 % under the white LED illumination, which is much higher than the practical top PCE of 31 %, indicating there is room further to improve the performance of IOPVs by various optimization methods. Based on these benefits, the recent progress in IOPVs with different methods was summarizes, and light was shed on the remaining challenges for achieving practical applications in the future. In the end, some guidelines for the development of IOPVs were proposed.

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Section: Why Can Iopvs Outperform Silicon-based Solar Cells Under Indoor Light Sources?mentioning

confidence: 99%

An Overview of High‐Performance Indoor Organic Photovoltaics

Liu

Luo

et al. 2021

ChemSusChem

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“…[45] Ternary OPVs based on PDI 4 i and PDI 4 e as third components were constructed according to conditions previously optimized for a PDI dimer and compared to a binary cell of FBT/PC 61 BM (Figure S26 for chemical structures and energy levels). [46] Figure 7A shows the complementary absorption spectra of the PDI 4 derivatives with the FBT polymer donor, which is one of the requirements for this strategy to be effective. [47] Under 1 sun illumination, binary and ternary devices (FBT:PC 61 BM, FBT: PC 61 BM:PDI 4 e and FBT:PC 61 BM:PDI 4 i) had similar performance metrics with short-circuit current densities (J sc ) of the best devices of 12.7 (binary) and 12.8 mA cm À 2 (both ternary systems) and fill factors (FF) 68-71 %.…”

Section: Organic Photovoltaics (Opvs)mentioning

confidence: 99%

“…This degree of improvement is similar to what has previously been shown for the ternary system containing an N-annulated PDI dimer, but is somewhat less than has been shown in a similar PDI monomer system. [45,46,48] An emerging application for OPV devices with strong visible light absorption is indoor light recycling. [46,[49][50][51] Here, the OPV device can efficiently absorb light emitted from LEDs and convert it into useable electricity for power sensors for the internet of things.…”

Section: Organic Photovoltaics (Opvs)mentioning

confidence: 99%

“…[45,46,48] An emerging application for OPV devices with strong visible light absorption is indoor light recycling. [46,[49][50][51] Here, the OPV device can efficiently absorb light emitted from LEDs and convert it into useable electricity for power sensors for the internet of things. OPV devices were tested under low light intensity illumination (ca.…”

Section: Organic Photovoltaics (Opvs)mentioning

confidence: 99%

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Hybrid Tetrameric Perylene Diimide Assemblies

2021

Self Cite

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Organic photovoltaics have found utility as indoor light recycling devices providing an opportunity for the sustainable powering of IoT sensors and related smart electronics. In the report, two organic π-conjugated molecules consisting of four perylene diimide (PDI) chromophores each are presented and used as non-fullerene acceptors in indoor photovoltaic devices. The new materials consist of a dimeric Nannulated PDI core with single PDIs grafted onto the pyrrolic N-atom positions of the core. Compounds PDI 4 e and PDI 4 i are PDI tetramers and differ with PDI 4 e having the terminal N-annulated PDI with pyrrolic N-atom distal to the core and PDI 4 i having the terminal N-annulated PDI with pyrrolic N-atom proximal to the core. The structural and optoelectronic properties were investigated using NMR spectroscopy, optical absorption and emission spectroscopy, and cyclic voltammetry. The compounds exhibit typical optical signatures for PDIs but notable is that the addition of grafted PDI molecules prevents significant aggregation of the dimeric PDI core, as compared to a reference dimer. Use as non-fullerene acceptors in ternary bulk-heterojunction blends with the polymer FBT and fullerene PC 61 BM lead to increased open-circuit voltages and power conversion efficiencies upwards of 13.7 % at 2000 lux light intensity.

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“…[ 19 ] In particular, organic solar cells are now frequently developed and optimized for indoor applications such as powering small, off‐grid electronic devices that constitute the internet of things. [ 20–24 ] A substantial part of device optimization for indoor applications is dealing with the increased influence of shunts at low light intensities and with the different spectrum of light emitting diodes (LEDs) or halogen lamps relative to the solar spectrum. [ 20,24 ] Industrial production of solar modules via roll‐to‐roll printing imposes additional constraints on device optimization both for indoor and outdoor applications.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Photo‐Induced Space Charge and Energetic Disorder on the Indoor and Outdoor Performance of Organic Solar Cells

Beuel

Hartnagel

Kirchartz

2021

Advcd Theory and Sims

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Apart from traditional large‐scale outdoor application, organic solar cells are also of interest for powering small, off‐grid electronic devices indoors. For operation under the low light intensities that are typical for indoor application, a high shunt resistance is required calling for thick active layers in industrial processing to ensure maximum coverage. However, the thickness of an organic solar cell based on energetically disordered semiconductors is limited by space‐charge effects from charged shallow defects under nonuniform generation. While other sources of space charge such as doping and asymmetric transport have been extensively discussed in previous studies, this work offers a theoretical analysis of this photo‐induced space charge in shallow defects and visualizes how the space charge builds up with increasing light intensity with drift‐diffusion simulations. It is shown that the effect particularly deteriorates the performance of an organic solar cell with high active‐layer thickness and substantial energetic disorder. However, the simulations reveal that solar cells are less sensitive to these parameters under low light intensities due to a reduced density of photo‐induced space charge. Therefore, a wider range of material systems and absorber thicknesses can be viable for indoor applications than one may initially expect from testing under 1 sun illumination.

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Slot-Die-Coated Ternary Organic Photovoltaics for Indoor Light Recycling

Cited by 26 publications

References 67 publications

An Overview of High‐Performance Indoor Organic Photovoltaics

An Overview of High‐Performance Indoor Organic Photovoltaics

Hybrid Tetrameric Perylene Diimide Assemblies

The Influence of Photo‐Induced Space Charge and Energetic Disorder on the Indoor and Outdoor Performance of Organic Solar Cells

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