Journal ArticleDOI
Hybrid Silicon Nanocone–Polymer Solar Cells
Sangmoo Jeong,Erik C. Garnett,Shuang Wang,Zongfu Yu,Shanhui Fan,Mark L. Brongersma,Michael D. McGehee,Yi Cui +7 more
TLDR
A hybrid solar cell composed of Si nanocones and conductive polymer that can achieve a short-circuit current density up to 39.1 mA/cm(2), which is very close to the theoretical limit.Abstract:
Recently, hybrid Si/organic solar cells have been studied for low-cost Si photovoltaic devices because the Schottky junction between the Si and organic material can be formed by solution processes at a low temperature. In this study, we demonstrate a hybrid solar cell composed of Si nanocones and conductive polymer. The optimal nanocone structure with an aspect ratio (height/diameter of a nanocone) less than two allowed for conformal polymer surface coverage via spin-coating while also providing both excellent antireflection and light trapping properties. The uniform heterojunction over the nanocones with enhanced light absorption resulted in a power conversion efficiency above 11%. Based on our simulation study, the optimal nanocone structures for a 10 μm thick Si solar cell can achieve a short-circuit current density, up to 39.1 mA/cm2, which is very close to the theoretical limit. With very thin material and inexpensive processing, hybrid Si nanocone/polymer solar cells are promising as an economically...read more
Citations
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Journal ArticleDOI
Light management for photovoltaics using high-index nanostructures.
TL;DR: This Review discusses some of the recent developments in the design and implementation of such photonic elements in thin-film photovoltaic cells, including nanoscale wires, particles and voids.
Journal ArticleDOI
Hole Selective MoOx Contact for Silicon Solar Cells
Corsin Battaglia,Xingtian Yin,Xingtian Yin,Xingtian Yin,Maxwell Zheng,Maxwell Zheng,Ian D. Sharp,Teresa Chen,Stephen McDonnell,Angelica Azcatl,Carlo Carraro,Biwu Ma,Roya Maboudian,Robert M. Wallace,Ali Javey,Ali Javey +15 more
TL;DR: This work demonstrates the use of nm-thick transition metal oxides as a simple and versatile pathway for dopant-free contacts to inorganic semiconductors and has important implications toward enabling a novel class of junctionless devices with applications for solar cells, light-emitting diodes, photodetectors, and transistors.
Journal ArticleDOI
Recent advances in antireflective surfaces based on nanostructure arrays
TL;DR: Inspired by the structures of the insect compound eyes, nanostructure arrays (NSAs) have been developed as effective antireflective surfaces, which exhibit promising broadband and quasi-omnidirectional properties together with multifunctions.
Journal ArticleDOI
All-back-contact ultra-thin silicon nanocone solar cells with 13.7% power conversion efficiency
TL;DR: The device design principles presented here balance the photonic and electronic effects together and are an important step to realizing highly efficient, thin Si and other types of thin solar cells.
Journal ArticleDOI
High efficiency hybrid PEDOT:PSS/nanostructured silicon Schottky junction solar cells by doping-free rear contact
Yunfang Zhang,Yunfang Zhang,Wei Cui,Yawen Zhu,Fengshuo Zu,Liang-Sheng Liao,Shuit-Tong Lee,Baoquan Sun +7 more
TL;DR: In this article, a high power conversion efficiency of 13.7% with a device area of 0.8 cm2 has been achieved for organic-nanostructured Si hybrid solar cells by inserting a cesium carbonate (Cs2CO3) layer between Si and the rear electrode aluminium.
References
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Book
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TL;DR: In this article, the p-n junction Monocrystalline solar cells and thin film solar cells managing light over the limit: Strategies for Higher Efficiency are discussed. And the basic principles of PV Electrons and Holes in Semiconductors Generation and Recombination Junctions Analysis of the P-n Junction Mon-Cylindrical Solar Cells
Journal ArticleDOI
Light Trapping in Silicon Nanowire Solar Cells
Erik C. Garnett,Peidong Yang +1 more
TL;DR: It is demonstrated that ordered arrays of silicon nanowires increase the path length of incident solar radiation by up to a factor of 73, which is above the randomized scattering (Lambertian) limit and is superior to other light-trapping methods.
Journal ArticleDOI
Nanosphere lithography: A materials general fabrication process for periodic particle array surfaces
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Journal ArticleDOI
Enhanced absorption and carrier collection in Si wire arrays for photovoltaic applications
Michael D. Kelzenberg,Shannon W. Boettcher,Jan Petykiewicz,Daniel B. Turner-Evans,Morgan C. Putnam,Emily L. Warren,Joshua M. Spurgeon,Ryan M. Briggs,Nathan S. Lewis,Harry A. Atwater +9 more
TL;DR: The observed absorption enhancement and collection efficiency enable a cell geometry that not only uses 1/100th the material of traditional wafer-based devices, but also may offer increased photovoltaic efficiency owing to an effective optical concentration of up to 20 times.
Journal ArticleDOI
Optical absorption enhancement in amorphous silicon nanowire and nanocone arrays.
Jia Zhu,Zongfu Yu,George F. Burkhard,Ching-Mei Hsu,Stephen T. Connor,Yueqin Xu,Qi Wang,Michael D. McGehee,Shanhui Fan,Yi Cui +9 more
TL;DR: The fabrication of a-Si:H nanowires and nanocones function as both absorber and antireflection layers, which offer a promising approach to enhance the solar cell energy conversion efficiency.