Carrier drift velocity balance mechanism in Si-based thin film solar cells using graded microcrystalline SiGe absorption layer

Lee, Ching-Ting; Lu, Kuan Fu; Tseng, Chun Yen

doi:10.1016/j.solener.2015.01.023

Cited by 21 publications

(7 citation statements)

References 20 publications

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“…In the case wherein a semiconductor contains electrons and holes simultaneously, the electrical conductivity is the sum of the p-type and n-type conductivity. The electron or hole mobility depends on the drift velocity [73,74], which is determined by the scattering time. Ionized impurity scattering and acoustic phonon scattering are two of the most crucial scattering sources in thermoelectric materials [75].…”

Section: Principle Mechanisms Of Thermoelectric Materialsmentioning

confidence: 99%

Recent Advances in Organic Thermoelectric Materials: Principle Mechanisms and Emerging Carbon-Based Green Energy Materials

2019

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Thermoelectric devices have recently attracted considerable interest owing to their unique ability of converting heat to electrical energy in an environmentally efficient manner. These devices are promising as alternative power generators for harvesting electrical energy compared to conventional batteries. Inorganic crystalline semiconductors have dominated the thermoelectric material fields; however, their application has been restricted by their intrinsic high toxicity, fragility, and high cost. In contrast, organic thermoelectric materials with low cost, low thermal conductivity, easy processing, and good flexibility are more suitable for fabricating thermoelectric devices. In this review, we briefly introduce the parameters affecting the thermoelectric performance and summarize the most recently developed carbon-material-based organic thermoelectric composites along with their preparation technologies, thermoelectric performance, and future applications. In addition, the p- and n-type carbon nanotube conversion and existing challenges are discussed. This review can help researchers in elucidating the recent studies on carbon-based organic thermoelectric materials, thus inspiring them to develop more efficient thermoelectric devices.

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Section: Principle Mechanisms Of Thermoelectric Materialsmentioning

confidence: 99%

Recent Advances in Organic Thermoelectric Materials: Principle Mechanisms and Emerging Carbon-Based Green Energy Materials

2019

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“…Energy consumption in 2050 is expected to reach 30 terawatts (TW). , To meet the current and future global electricity demands, the manufacture of solar cells has expanded dramatically in recent years. Approximately 90% of the present photovoltaic cell market is silicon (Si)-based. , Si-based solar cells have a variety of drawbacks, including cost, weather dependence, space requirements, pollution concerns, rigidity, and high production costs. , Due to their cheap manufacturing costs, established fabrication technologies, large-scale production flexibility, and extremely effective power conversion, thin-film solar cells (TFSCs) are becoming more attractive in photovoltaic (PV) technology. − To produce cheaper, greater-efficiency, and greener solar cells, researchers in this field explore some criteria such as earth-abundant and nontoxic materials.…”

Section: Introductionmentioning

confidence: 99%

Performance Enhancement of an MoS₂-Based Heterojunction Solar Cell with an In₂Te₃ Back Surface Field: A Numerical Simulation Approach

et al. 2023

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Researchers are currently showing interest in molybdenum disulfide (MoS2)-based solar cells due to their remarkable semiconducting characteristics. The incompatibility of the band structures at the BSF/absorber and absorber/buffer interfaces, as well as carrier recombination at the rear and front metal contacts, prevents the expected result from being achieved. The main purpose of this work is to enhance the performance of the newly proposed Al/ITO/TiO2/MoS2/In2Te3/Ni solar cell and investigate the impacts of the In2Te3 BSF and TiO2 buffer layer on the performance parameters of open-circuit voltage (V OC), short-circuit current density (J SC), fill factor (FF), and power conversion efficiency (PCE). This research has been performed by utilizing SCAPS simulation software. The performance parameters such as variation of thickness, carrier concentration, the bulk defect concentration of each layer, interface defect, operating temperature, capacitance–voltage (C–V), surface recombination velocity, and front as well as rear electrodes have been analyzed to achieve a better performance. This device performs exceptionally well at lower carrier concentrations (1 × 1016 cm–3) in a thin (800 nm) MoS2 absorber layer. The PCE, V OC, J SC, and FF values of the Al/ITO/TiO2/MoS2/Ni reference cell have been estimated to be 22.30%, 0.793 V, 30.89 mA/cm2, and 80.62% respectively, while the PCE, V OC, J SC, and FF values have been determined to be 33.32%, 1.084 V, 37.22 mA/cm2, and 82.58% for the Al/ITO/TiO2/MoS2/In2Te3/Ni proposed solar cell by introducing In2Te3 between the absorber (MoS2) and the rear electrode (Ni). The proposed research may give an insight and a feasible way to realize a cost-effective MoS2-based thin-film solar cell.

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“…Carriers move in the net direction because of the presence of an electric eld and thermal velocity. Balancing of carrier velocity by enhancing the driving eld improves the conversion e ciency of solar cells because the driving eld is required for migrating the optically generated holes [31].…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

Analysis of Spectral Transmission in Si Solar Cell with Pyramidal Texturization by Using PC3S Simulation

Rais

Sinin

Sepeai

et al. 2022

Silicon

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Management of light is a crucial task in solar cell design and structure because it increases the path length of the light inside, which in turn increases the probability of electron-hole pair generation. This study addresses the impact of a pyramidal textured structure on spectral transmission in the morphology of silicon. The morphology of silicon wafers was investigated using PC3S spectral transmission software to study the spectral transmission, re ectance, collection probability, mobility, carriers, electric eld, velocity, current and surface recombination. Spectral transmission on the front surface with pyramidal texture showed a better transmission percentage than the planar surface. The texture with a depth of 20 µm and base length of 20 µm exhibited good performance in front spectral transmission, spectral re ectance, electric eld, velocity, current and surface recombination from the top to the bottom of the sample. The planar surface had more re ectance and lower collection probability than the other pyramidal textured samples due to its low mobility, carriers, electric eld, velocity and current but high surface recombination.

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Carrier drift velocity balance mechanism in Si-based thin film solar cells using graded microcrystalline SiGe absorption layer

Cited by 21 publications

References 20 publications

Recent Advances in Organic Thermoelectric Materials: Principle Mechanisms and Emerging Carbon-Based Green Energy Materials

Recent Advances in Organic Thermoelectric Materials: Principle Mechanisms and Emerging Carbon-Based Green Energy Materials

Performance Enhancement of an MoS₂-Based Heterojunction Solar Cell with an In₂Te₃ Back Surface Field: A Numerical Simulation Approach

Analysis of Spectral Transmission in Si Solar Cell with Pyramidal Texturization by Using PC3S Simulation

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Carrier drift velocity balance mechanism in Si-based thin film solar cells using graded microcrystalline SiGe absorption layer

Cited by 21 publications

References 20 publications

Recent Advances in Organic Thermoelectric Materials: Principle Mechanisms and Emerging Carbon-Based Green Energy Materials

Recent Advances in Organic Thermoelectric Materials: Principle Mechanisms and Emerging Carbon-Based Green Energy Materials

Performance Enhancement of an MoS2-Based Heterojunction Solar Cell with an In2Te3 Back Surface Field: A Numerical Simulation Approach

Analysis of Spectral Transmission in Si Solar Cell with Pyramidal Texturization by Using PC3S Simulation

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Performance Enhancement of an MoS₂-Based Heterojunction Solar Cell with an In₂Te₃ Back Surface Field: A Numerical Simulation Approach