Effect of spatial distribution of generation rate on bulk heterojunction organic solar cell performance: A novel semi-analytical approach

Islam, Mahnaz; Wahid, Sumaiya; Chowdhury, Mohammed Raihan; Hakim, Faysal; Alam, Md. Kawsar

doi:10.1016/j.orgel.2017.04.021

Cited by 12 publications

(15 citation statements)

References 81 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For thicker TiOx, the electric field intensity inside the active layer is decreasing. Based on the active layer thickness, there lies optimum thickness for the optical spacer that enables to shift off the generation peaks [50]. The free carrier generation rate is related to the photogeneration of excitons, proportional to the optical electric field energy dissipation (|E| 2 ) [50].…”

Section: Effect Of Interlayersmentioning

confidence: 99%

“…Based on the active layer thickness, there lies optimum thickness for the optical spacer that enables to shift off the generation peaks [50]. The free carrier generation rate is related to the photogeneration of excitons, proportional to the optical electric field energy dissipation (|E| 2 ) [50]. Depending on the optical spacer layer's thickness, the effects on the generation of charge carriers and the maximum achievable current can be described.…”

Section: Effect Of Interlayersmentioning

confidence: 99%

See 1 more Smart Citation

Design and Performance Analysis of Tandem Organic Solar Cells: Effect of Cell Parameter

et al. 2021

View full text Add to dashboard Cite

An organic solar cell (OSC), competitive with traditional one (Si-based), draws attention to future renewable energy sources due to its low-cost and continually rising efficiency. The tandem or multijunction structure undoubtedly offers an efficient way to boost the performance of OSCs. This work has explored the optical modeling of different organic photoactive materials to identify the potential materials for efficient tandem structure. The performance of double, triple, and quadruple junction tandem OSCs with suitable bandgaps has been analyzed with photoactive materials. The absorption efficiency enhances considerably using the thickness optimization of each subcell in tandem structures. Current matching in all subcells, an essential factor for efficient device operation, is taken into account while optimizing tandem structures. The quadruple design can achieve better photovoltaic performance than double or triple junction devices. The efficiency predicted from our proposed quadruple structure is ~15.45%, with a short-circuit current density, JSC of ~9 mA/cm 2 and an open-circuit voltage, VOC of ~2.64 V. These results are one of the high-performance in terms of organic photovoltaic (OPV). Therefore, the above findings indicate that OSCs are very potential for future photovoltaic applications.

show abstract

Section: Effect Of Interlayersmentioning

confidence: 99%

Section: Effect Of Interlayersmentioning

confidence: 99%

Design and Performance Analysis of Tandem Organic Solar Cells: Effect of Cell Parameter

et al. 2021

View full text Add to dashboard Cite

show abstract

“…There are many factors that influence the performance of OPVs such as the carrier mobility [6,7], the work function of the electrodes [8,9], the permittivity of the active layer [7,10] and the thickness of the active layer [11][12][13]. The light absorption profile inside the active layer has been reported to be another factor that influences the performance [14][15][16]. The light absorption profile is determined by several factors such as the optical properties of the OPV components and the thickness of the active layer [13].…”

Section: Introductionmentioning

confidence: 99%

“…Although understanding the effect of the light absorption profile is clearly important, there is still a gap concerning our understanding on this matter. It has been shown that a high light absorption at a specific position inside the active layer improves the performance [14][15][16]. In more detail, Mescher et al [14] and Islam et al [16] concluded that a higher light absorption at the center of the active layer gives a better performance but did not conclude on the possible effect of carrier mobility imbalance.…”

Section: Introductionmentioning

confidence: 99%

“…It has been shown that a high light absorption at a specific position inside the active layer improves the performance [14][15][16]. In more detail, Mescher et al [14] and Islam et al [16] concluded that a higher light absorption at the center of the active layer gives a better performance but did not conclude on the possible effect of carrier mobility imbalance. On the other hand, Tress et al [15] concluded that the fill factor (FF) improves if more light is absorbed near the contact that collects the slower carrier type even when the mobility imbalance is quite low.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Light Absorption Profile on the Performance of Organic Photovoltaics

Mohamed

Ibrahim

2021

IIUMEJ

View full text Add to dashboard Cite

We investigate how an enhanced light absorption at a specific position inside the active layer affects the performance of organic photovoltaic cells (OPVs), namely the short-circuit current density ( ), the open-circuit voltage ( ), the fill factor (FF), and the power conversion efficiency (PCE). The performance is calculated using an updated version of a previously published analytical current-voltage model for OPVs, where the updated model allows the light absorption profile to be described by any functions provided that analytical solutions can be produced. We find that the light absorption profile affects the performance through the drift current. When the mobility imbalance is not very high (when the ratio of the mobility of the faster carrier type to the mobility of the slower carrier type is less than about ), the PCE is maximized when the light absorption is concentrated at the center of the active layer. When the mobility imbalance is very high (when the ratio of the mobility of the faster carrier type to the mobility of the slower carrier type is more than approximately ), the PCE is maximized when the light absorption is concentrated near the electrode collecting the slower carrier type. Therefore, it is important to ensure that the light absorption profile is properly tuned so that the performance of OPVs is maximized. Moreover, any efforts that we make to improve the performance should not lead to a light absorption profile that would actually impair the overall performance. ABSTRAK: Kajian ini menilai bagaimana penyerapan cahaya yang tinggi pada bahagian tertentu lapisan aktif mempengaruhi prestasi sel fotovoltaik organik (OPV), iaitu ketumpatan arus litar pintas (Jsc), voltan litar terbuka (Voc), faktor pengisian (FF), dan kecekapan penukaran kuasa (PCE). Prestasi dikira mengguna pakai model terkini yang diperbaharui dari model asal analitikal OPV voltan-arus, di mana model ini membenarkan mana-mana profil penyerapan cahaya digunakan asalkan penyelesaian analitikal terhasil. Dapatan kajian mendapati profil penyerapan cahaya mempengaruhi prestasi berdasarkan arus hanyut. Apabila ketidakseimbangan pergerakan caj tidak begitu tinggi (di mana nisbah pergerakan pembawa caj laju kepada perlahan adalah kurang daripada 103), PCE menjadi maksimum jika penyerapan cahaya bertumpu pada tengah lapisan aktif. Apabila ketidakseimbangan pergerakan caj sangat tinggi (di mana nisbah pergerakan pembawa caj laju kepada perlahan adalah lebih daripada 104), PCE menjadi maksimum jika penyerapan cahaya bertumpu pada elektrod yang mengutip pembawa caj perlahan. Oleh itu, kedudukan talaan profil penyerapan cahaya yang tepat adalah sangat penting bagi menentukan prestasi OPV dimaksimumkan. Tambahan, apa sahaja usaha penambahbaikan prestasi seharusnya tidak menyebabkan pengurangan keseluruhan prestasi profil penyerapan cahaya.

show abstract

A physics-based current–voltage model for organic solar cells using a combined analytical and regression approach

Ibrahim

2023

Appl. Phys. A

View full text Add to dashboard Cite

Effect of spatial distribution of generation rate on bulk heterojunction organic solar cell performance: A novel semi-analytical approach

Cited by 12 publications

References 81 publications

Design and Performance Analysis of Tandem Organic Solar Cells: Effect of Cell Parameter

Design and Performance Analysis of Tandem Organic Solar Cells: Effect of Cell Parameter

Influence of Light Absorption Profile on the Performance of Organic Photovoltaics

A physics-based current–voltage model for organic solar cells using a combined analytical and regression approach

Contact Info

Product

Resources

About