On the convergence of the algorithm for simulating organic solar cells

Hernández-García, Liliana Fernanda; Cabrera-Arenas, V.; Resendiz-Mendoza, L.M.

doi:10.1016/j.cpc.2015.07.006

Cited by 7 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The built-in electric field in the active layer assists the drift process. Hernandez-Garcia et al [12] showed that the electric field is almost uniform across the active layer if the layer thickness is in the range of few hundreds nm or less. In fact, the optimum active layer thickness for the BHJ photovoltaics is 70-200 nm [4,13].…”

Section: Dark Currentmentioning

confidence: 99%

Analytical Model for Voltage-Dependent Photo and Dark Currents in Bulk Heterojunction Organic Solar Cells

2016

View full text Add to dashboard Cite

Abstract:A physics-based explicit mathematical model for the external voltage-dependent forward dark current in bulk heterojunction (BHJ) organic solar cells is developed by considering Shockley-Read-Hall (SRH) recombination and solving the continuity equations for both electrons and holes. An analytical model for the external voltage-dependent photocurrent in BHJ organic solar cells is also proposed by incorporating exponential photon absorption, dissociation efficiency of bound electron-hole pairs (EHPs), carrier trapping, and carrier drift and diffusion in the photon absorption layer. Modified Braun's model is used to compute the electric field-dependent dissociation efficiency of the bound EHPs. The overall net current is calculated considering the actual solar spectrum. The mathematical models are verified by comparing the model calculations with various published experimental results. We analyze the effects of the contact properties, blend compositions, charge carrier transport properties (carrier mobility and lifetime), and cell design on the current-voltage characteristics. The power conversion efficiency of BHJ organic solar cells mostly depends on electron transport properties of the acceptor layer. The results of this paper indicate that improvement of charge carrier transport (both mobility and lifetime) and dissociation of bound EHPs in organic blend are critically important to increase the power conversion efficiency of the BHJ solar cells.

show abstract

Section: Dark Currentmentioning

confidence: 99%

Analytical Model for Voltage-Dependent Photo and Dark Currents in Bulk Heterojunction Organic Solar Cells

2016

View full text Add to dashboard Cite

show abstract

“…where µ e and µ h are the mobilities of electrons and holes, respectively. Hernandez-Garcia et al [23] showed that the electric field distribution is almost uniform across the bulk layer if the layer thickness is in the submicron range. Therefore, the electric field F is considered uniform across the active layer.…”

Section: Theoretical Modelmentioning

confidence: 99%

A Physics-Based Analytical Model for Current–Voltage Characteristics of Perovskite Solar Cells Incorporating Bulk Recombination

Kabir

2021

Energies

View full text Add to dashboard Cite

A physics-based compact analytical model for studying the current–voltage characteristics of perovskite solar cells has been proposed by considering the external voltage-dependent carrier transport, exponential photon absorption, and bulk charge carrier recombination. The explicit analytical expressions for both the forward dark and photocurrents in perovskite solar cells are derived. The current in the external circuit is calculated considering the actual solar spectrum. The mathematical models are verified and useful physical parameters are extracted by comparing the model calculations with the published experimental results on various perovskite solar cells. The proposed model shows excellent agreement with the experimental results. The power conversion efficiency can be improved further by enhancing the carrier transport in the perovskite layer. The improvement in charge carrier transport enhances the fill factor and hence the power conversion efficiency.

show abstract

“…The built-in electric field in the active layer assists the drift process. Hernandez-Garcia et al [52] showed that the electric field is almost uniform across the active layer if the layer thickness is in the range of few hundreds nm or less. In fact, the optimum active layer thickness for the BHJ photovoltaics is 70-200 nm [49,53].…”

Section: Theoretical Dark Current Modelmentioning

confidence: 99%