Topic
Amorphous silicon
About: Amorphous silicon is a research topic. Over the lifetime, 26777 publications have been published within this topic receiving 423234 citations.
Papers published on a yearly basis
Papers
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TL;DR: In this article, the AM1.5 conversion efficiencies are 19.3% on a float-zone wafer and 18.8% on Czochralski wafer.
Abstract: Efficient crystalline silicon heterojunction solar cells are fabricated on p-type wafers using amorphous silicon emitter and back contact layers. The independently confirmed AM1.5 conversion efficiencies are 19.3% on a float-zone wafer and 18.8% on a Czochralski wafer; conversion efficiencies show no significant light-induced degradation. The best open-circuit voltage is above 700 mV. Surface cleaning and passivation play important roles in heterojunction solar cell performance.
104 citations
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TL;DR: In this article, the absorption enhancement by metallic nanodiscs in thin-film amorphous silicon solar cells was investigated and quantitatively evaluated by rigorously solving Maxwell's equations.
Abstract: We investigate the absorption enhancement by metallic nanodiscs in thin-film amorphous silicon solar cells. The effect is quantitatively evaluated by rigorously solving Maxwell’s equations. We show that 50% more photons can be absorbed using geometries accessible for current nanofabrication technologies. Moreover, the thinner the solar cell, the larger the absorption enhancement. Detailed investigations prove that the enhancement can be related to the excitation of localized plasmon polaritons. The simultaneous enhancement in both the near-field amplitude and the scattering cross section at resonance as the leading physical mechanism is discussed in detail.
104 citations
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TL;DR: In this paper, a few examples of the information furnished by the analysis of the optical properties of non-crystalline materials are briefly discussed, in particular infrared and optical absorption of doped amorphous silicon, vitreous SiO 2 and SiO x N y glasses.
103 citations
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TL;DR: In this article, the thermal resistance analysis of the photovoltaic-thermoelectric (PV-TE) hybrid system is proposed to optimize the design of the coupled system in terms of optimal total conversion efficiency.
103 citations
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03 Mar 1982TL;DR: In this paper, new and improved photovoltaic devices which provide increased short circuit currents and efficiencies over that previously obtainable from prior devices have been disclosed, and the disclosed devices include incident radiation directing means for directing at least a portion of the incident light through the active region or regions thereof at angles sufficient to substantially confine the directed radiation in the devices.
Abstract: There is disclosed new and improved photovoltaic devices which provide increased short circuit currents and efficiencies over that previously obtainable from prior devices. The disclosed devices include incident radiation directing means for directing at least a portion of the incident light through the active region or regions thereof at angles sufficient to substantially confine the directed radiation in the devices. This allows substantially total utilization of photogenerated electron-hole pairs. Further, because the light is directed through the active region or regions at such angles, the active regions can be made thinner to also increase collection efficiencies. The incident radiation directors can be random surface or bulk reflectors to provide random scattering of the light, or periodic surface or bulk reflector to provide selective scattering of the light. While the present invention is applicable to photovoltaic devices formed from any type of semiconductor material, as for example, crystalline, polycrystalline, or amorphous semiconductor alloys or any combination thereof, disclosure herein is primarily directed to photovoltaic devices formed from amorphous silicon alloys preferably incorporating fluorine as a density of states reducing element. The disclosure is also directed to, without limitation, photovoltaic devices of the p-i-n configuration, both as single cells and multiple cells arranged in tandem.
103 citations