Sol–gel assisted preparation and characterization of silver indium diselenide powders

Chien, Szu-Chia; Chen, Fushan; Lu, Chung‐Hsin

doi:10.1016/j.jallcom.2011.06.069

Cited by 12 publications

(3 citation statements)

References 22 publications

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“…Thin film solar cells are promising for solar power generation in recent years and Cu(In, Ga)Se 2 (CIGS) one of the potential candidates owing to direct bandgaps, high absorption coefficients, and superior cell performance. CIGS films with broad single-phase composition range and tunable bandgaps have attracted considerable attention as light absorbers for highly efficient photovoltaic devices [1][2][3]. Various vacuum processes are generally utilized to fabricate CIGS films, including co-evaporation processes and two-step fabrication processes that involve sputtering precursor and post-selenization reaction [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Incorporation of copper–indium back-end layers in the solution-based Cu(In, Ga)Se₂ films: enhancement of photovoltaic performance of fabricated solar cells

Som

2020

Mater. Res. Express

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The morphology and photovoltaic properties of the solution-based Cu(In, Ga)Se 2 films are effectively improved via the incorporation of copper-indium back-end layers in the precursor films. The effects on the concentrations of bimetal-ions solutions to prepare copper-indium back-end layers are investigated in this study. The incorporation of copper-indium back-end layer in the precursor film enhances the internal diffusion between gallium-ions and indium-ions during selenization reaction. Hence, the porous structure in the back-contact region of prepared CIGS films becomes densified, and the bandgap distribution of films shows a gradient profile. The densified morphology and gradient bandgap reduce the carrier recombination and improve the carrier collection of solar cells. In contrast to the pristine precursor film, the precursor film with a copper-indium back-end layer increase the conversion efficiency of prepared solar cells from 8.34% to 11.13%. The enhancement of conversion efficiency is attributed to the improvement of short-circuit current density and fill factor from 25.70 mA cm −2 to 31.79 mA cm −2 and 57.65% to 65.70%, respectively. This study reveals that the photovoltaic properties of solution-based CIGS solar cells can be improved significantly via the incorporation of copper-indium back-end layers into the precursor films. OPEN ACCESS RECEIVED

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Section: Introductionmentioning

confidence: 99%

Incorporation of copper–indium back-end layers in the solution-based Cu(In, Ga)Se₂ films: enhancement of photovoltaic performance of fabricated solar cells

Som

2020

Mater. Res. Express

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“…Thin‐film solar cells have developed rapidly due to the effective material utilization, the low weight, and the flexibility . Among the thin‐film solar cells, Cu(In,Ga)Se 2 solar cells are considered a promising candidate for cost‐competitive and high‐efficiency solar devices .…”

Section: Introductionmentioning

confidence: 99%

“…T HIN-FILM solar cells have developed rapidly due to the effective material utilization, the low weight, and the flexibility. 1,2 Among the thin-film solar cells, Cu(In,Ga)Se 2 solar cells are considered a promising candidate for costcompetitive and high-efficiency solar devices. 3,4 Highly efficient Cu(In,Ga)Se 2 solar cells are typically fabricated using absorbers with band gaps of 1.1-1.3 eV.…”

Section: Introductionmentioning

confidence: 99%

Nonvacuum Solution Synthesis of (Ag,Cu)(In,Ga)Se₂ Absorbers for Applications in Thin‐Film Solar Cells

Yang

Sung

et al. 2015

J. Am. Ceram. Soc.

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The effects of selenization temperatures on the phase formation and the photovoltaic properties of silver-ion-doped Cu(In,Ga) Se 2 (ACIGS) films were investigated. Cu 2 -x Se phase coexisted with CuInSe 2 phase in the films as the selenization temperature was relatively low. Increasing the selenization temperatures promoted the formation of the chalcopyrite phase and increased the grain size. Upon increasing the selenization temperature to 600°C, single-phased ACIGS films with a grain size of 2.1-2.2 lm were successfully synthesized. The incorporation of Ag + and Ga 3+ ions into CuInSe 2 during the phase formation of ACIGS elevated the band gaps of the films, thereby improving the open-circuit voltage (V oc ) of the solar cells. The grain growth on raising the selenization temperatures also elevated the short-circuit current (J sc ) values owing to the suppression of the electron-hole recombination at grain boundaries. In the diode analysis, the facilitated phase formation suppressed the shunt path, decreasing the values of the diode factor (A), shunt conductance (G), and saturated current (J o ), thereby improving the cell performance. In this study, ACIGS solar cells with an efficiency of 7.21% prepared via the nonvacuum process were first demonstrated.

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ChemInform Abstract: Sol—Gel Assisted Preparation and Characterization of Silver Indium Diselenide Powders.

Chien

Chen

2011

ChemInform

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Sol–gel assisted preparation and characterization of silver indium diselenide powders

Cited by 12 publications

References 22 publications

Incorporation of copper–indium back-end layers in the solution-based Cu(In, Ga)Se₂ films: enhancement of photovoltaic performance of fabricated solar cells

Incorporation of copper–indium back-end layers in the solution-based Cu(In, Ga)Se₂ films: enhancement of photovoltaic performance of fabricated solar cells

Nonvacuum Solution Synthesis of (Ag,Cu)(In,Ga)Se₂ Absorbers for Applications in Thin‐Film Solar Cells

ChemInform Abstract: Sol—Gel Assisted Preparation and Characterization of Silver Indium Diselenide Powders.

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Sol–gel assisted preparation and characterization of silver indium diselenide powders

Cited by 12 publications

References 22 publications

Incorporation of copper–indium back-end layers in the solution-based Cu(In, Ga)Se2 films: enhancement of photovoltaic performance of fabricated solar cells

Incorporation of copper–indium back-end layers in the solution-based Cu(In, Ga)Se2 films: enhancement of photovoltaic performance of fabricated solar cells

Nonvacuum Solution Synthesis of (Ag,Cu)(In,Ga)Se2 Absorbers for Applications in Thin‐Film Solar Cells

ChemInform Abstract: Sol—Gel Assisted Preparation and Characterization of Silver Indium Diselenide Powders.

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Incorporation of copper–indium back-end layers in the solution-based Cu(In, Ga)Se₂ films: enhancement of photovoltaic performance of fabricated solar cells

Incorporation of copper–indium back-end layers in the solution-based Cu(In, Ga)Se₂ films: enhancement of photovoltaic performance of fabricated solar cells

Nonvacuum Solution Synthesis of (Ag,Cu)(In,Ga)Se₂ Absorbers for Applications in Thin‐Film Solar Cells