Efficiency of exciton splitting in organic photovoltaic cells within EQE spectrum

Jarosz, G.; Marczyński, Rafał; Signerski, R.

doi:10.1016/j.apsusc.2021.152167

Cited by 3 publications

(4 citation statements)

References 36 publications

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“…OPVs, which generate clean, renewable, and sustainable energy, 33,41,45,108,156‐160 have the potential to change the organic photovoltaics market, 33 as this emerging technology has numerous benefits over conventional inorganic semiconductor‐based systems 12,138 . OPVs have a short energy payback time, 33,162 they can absorb light across the solar spectrum, 64 their fabrication cost is low 35,46,92,114,136,158,16‐169 and simple, 28,92,11,73,138,160,165,170 due to the use of abundant materials, 22 can be manufactured using solution‐based processing, 62,63,72,156,165,171,17 do not require high manufacturing temperatures,…”

Section: Organic Photovoltaic Cellsmentioning

confidence: 99%

“…41,42,48 Being at the D-A interface, the electron and hole form a charge transfer (TC) state, in which the electron is in the acceptor material and the hole is in the donor. 49,50 In the third step, the electron-hole pair disassociates into free carriers. If the binding energy of the éxciton (Coulomb attraction) is overcome, the electron is transferred to the lowest unoccupied molecular orbital (LUMO) of the acceptor while the hole is transferred back to the highest occupied molecular orbital (HOMO) of the donor.…”

Section: Structure and Working Principlementioning

confidence: 99%

“…In order to improve V oc , and simultaneously maintain high J sc and FF values, it is necessary to properly combine the donor and acceptor materials. 134 To improve the PCE of OPVs, and thus bring the conversion efficiency closer to silicon-based cells, a better understanding of light absorption and photoinduced charge transfer dynamics from donor to acceptor is a must, 37,50,135,136 as well as the design of new materials, 137 effective processing procedures, interface engineering, and novel device architectures. 11,42,138,139 Studies have reported improved PCEs of 14% and 13.76% for devices with PM6:TITI-4F 140 and PM7:IT-4Cl 141 active layers, respectively.…”

Section: Power Conversion Efficiency Open Circuit Voltage Short Circu...mentioning

confidence: 99%

“…In the second step, the exciton diffuses to the donor–acceptor interface 41,42,48 . Being at the D‐A interface, the electron and hole form a charge transfer (TC) state, in which the electron is in the acceptor material and the hole is in the donor 49,50 . In the third step, the electron‐hole pair disassociates into free carriers.…”

Section: Organic Photovoltaic Cellsmentioning

confidence: 99%

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A review on organic photovoltaic cell

Sampaio

González

2022

Intl J of Energy Research

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Summary The objective of this article is to identify how organic photovoltaic cells have been addressed in scientific studies published until 2022. To this end, a literature review was conducted, which involved the search for articles through the Advanced Search tool of the Periodicals portal of the Coordination for the Improvement of Higher Education Personnel, as well as the preparation of a Microsoft Excel spreadsheet to assist in the classifying the articles, followed by a structured analysis of the structure, operating principle, materials, performance parameters, stability/life span/degradation, challenges, opportunities, and applications of organic photovoltaic cells. The results of this research point out that organic photovoltaic devices are formed by electrodes (anode, such as indium‐tin oxide, silver nanowires, carbon nanotubes and graphene and cathode, such as calcium, barium, or aluminum), hole transport layers (PEDOT:PSS), and electrons (ZnO or the TiO2), as well as by the active layer (donor, such as P3HT or PTB7, and acceptor, such as C60 and C70 fullerenes and their PCBM derivatives, as well as non‐fulerene acceptors). We further identify that the working principle of organic photovoltaic cells consists in the generation of photocurrent from the absorption of a photon that results in an exciton, this in turn diffuses to the donor–acceptor interface, and disassociates into free carriers, which carry collected charges to the electrodes. We find that organic photovoltaic cells are simple to manufacture, less expensive, more flexible, lightweight, and that the development of these devices has advanced in recent years. However, for practical relevance, some challenges need to be overcome, including power conversion efficiency, stability, degradation, lifetime, as well as fabrication of large areas through roll‐to‐roll methods.

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