A Simple Optimization of Triple-Junction Solar Cell nc-Si:H/a-Si:H/a-SiGe:H Using Computer Modeling and Robust Design

Abuzairi, Tomy; Poespawati, Nji Raden

doi:10.4028/www.scientific.net/amr.896.455

Cited by 4 publications

(4 citation statements)

References 6 publications

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“…The original structure was optimized by searching the optimum thickness of the active layer, which resulted in a device with an efficiency of 15.73% [23]. To increase its efficiency further, we optimized the device structure in three stages, as shown in Figure 1.…”

Section: Device Design and Optimizationmentioning

confidence: 99%

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Optimization of triple-junction hydrogenated silicon solar cell nc-Si:H/a-Si:H/a-SiGe:H using step graded Si1‑xGex layer

et al. 2021

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This paper shows the attempt to increase the performance of triple-junction hydrogenated silicon solar cells with structure nc-Si:H/a-Si:H/a-SiGe:H. The wxAMPS software was used to simulate and optimize the design. In an attempt to increase the performance, an a-SiC:H layer on the p-layer was replaced with an a-Si:H layer and an a-SiGe layer was replaced with a step graded Si1-xGex layer. Then, to achieve the best performing device, we optimized the concentration of germanium and thickness of the step graded Si1-xGex layer. The result shows that the optimum concentration of germanium in the p-i upper layer and i-n lower layer are 0.86 and 0.90, respectively and the optimum thicknesses are 10 nm and 230 nm, respectively. The optimized device performed with an efficiency of 19.08%, adding 3 more percent of efficiency from the original design. Moreover, there is a significant possibility of increasing the efficiency of a triple-junction solar cell by modifying it into a step graded Si1-xGex layer.

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Section: Device Design and Optimizationmentioning

confidence: 99%

“…Here, we optimize the triple-junction solar cells of nc-Si:H/a-Si:H/a-SiGe:H which is based on our previous works [23]. The structure still using bulk a-SiGe:H which has a significant lattice constant mismatch.…”

Section: Introductionmentioning

confidence: 99%

Optimization of triple-junction hydrogenated silicon solar cell nc-Si:H/a-Si:H/a-SiGe:H using step graded Si1‑xGex layer

et al. 2021

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“…solar cell, protecting circuit, battery built-in battery management system (BMS), control circuit, LED driving circuit, and LED lamp. Solar cell in this lamp is utilized to absorb solar radiation and convert it to electricity [7], [8]. Based on solar cell efficiency table, the highest crystalline Si solar cell is 27.6 % [9].…”

Section: Working Principle Of Semi-integrated Solar Street Lampmentioning

confidence: 99%

Development of semi-integrated solar street lamp for rural area

et al. 2018

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A solar street lamp is a lamp technology that utilizes solar cell to obtain electrical energy during the daylight hour by solar radiation and then use the electrical energy to provide light at night. Semiintegrated lamp tries to overcome complicated installation and expensive price of normally solar street lamp. Semi-integrated solar street lamp only integrated solar cell, controller, and battery, while lamp is separated using cable. This configuration makes semi-integrated lamp cheaper and easier for installation that is suitable for rural area. Therefore, in this paper we develop semi-integrated type of solar street lamp. The illumination of semi-integrated lamp was measured using lux meter. The power of the lamp was calculated to meet the energy needs for 12 hours. The results show that the semi-integrated solar street lamp with low power LED ~2W has been successfully developed. The solar lamp can be automatically turned on for around 12 hours, from 5:50 PM to 5:31 AM (UTC+7). The illumination average of the lamp is 17.42 lux with 6.97 lux deviation. The measurement result of illumination shows that the solar street lamp has maximum distance of more than 140 cm with 230 cm high of lamp.

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“…Therefore, using solar cell as another source of electricity is very possible especially for lowering cost [1]. Solar cell is utilized to absorb solar radiation and convert it to electricity in the remote area [2]. Solar cell usually uses a solar charge controller to keep battery from overcharging.…”

Section: Introductionmentioning

confidence: 99%

Development of simple solar charge controller using 8-bit microcontroller attiny85

et al. 2018

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This paper present simple and inexpensive solar charge controller (SCC) using 8-bit microcontroller ATtiny85. The SCC using a pulse width modulation (PWM) signal to transistor and MOSFET to control current that generated by the microcontroller. The battery voltage state also monitored using a series resistor paralleled to the battery and the voltage drop connected to the microcontroller. The design of SCC consists of 3 major part i.e. microcontroller, current driver, voltage sensing. The purpose of measurement is to know the characteristics of 2 charging modes, mode 1 (one) and mode 2 (two), that occur in the system created. The measured data is the battery voltage as independent variable, and the solar panel’s voltage, the current that flow towards battery and the power provided for charging. Measurements are conducted from the battery voltage state of 7.84 V to 8.4 V. The results show that the solar charge controller using 8-bit microcontroller ATtiny85 was successfully managed to provide current and voltage according to expected design with 400 mA, 8.9 V for the first charging case and 150 mA, 12 V for the second charging case.

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A Simple Optimization of Triple-Junction Solar Cell nc-Si:H/a-Si:H/a-SiGe:H Using Computer Modeling and Robust Design

Cited by 4 publications

References 6 publications

Optimization of triple-junction hydrogenated silicon solar cell nc-Si:H/a-Si:H/a-SiGe:H using step graded Si1‑xGex layer

Optimization of triple-junction hydrogenated silicon solar cell nc-Si:H/a-Si:H/a-SiGe:H using step graded Si1‑xGex layer

Development of semi-integrated solar street lamp for rural area

Development of simple solar charge controller using 8-bit microcontroller attiny85

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