Focus
Photovoltaics
- Focus issue:
- March 2012 Volume 6 No 3 pp129-202
Photovoltaics is expected to provide the next generation of safe, secure, sustainable and affordable energy. The challenges now are to reduce costs and improve power-conversion efficiencies. This Focus Issue covers cutting-edge solar cell technologies such as polymer, dye-sensitized and intermediate-band solar cells, as well as advanced light-harvesting techniques based on plasmonics and quantum dots. Also included is an interview with the world's largest solar-cell manufacturer on the future of the photovoltaic industry.
Editorial
A sunny outlook - pp129
doi:10.1038/nphoton.2012.38
Using advanced technologies to improve photoinduced charge transfer and light harvesting is essential in the development of high-efficiency solar cells. Once the problem of energy storage has been overcome, solar energy is sure to become the world's major source of sustainable energy.
Full text - A sunny outlook | PDF (131 KB) - A sunny outlook
Commentaries
Harnessing plasmonics for solar cells - pp130 - 132
Martin A. Green & Supriya Pillai
doi:10.1038/nphoton.2012.30
Plasmons are free-electron oscillations in a conductor that allow light to be manipulated at the nanoscale. The ability of plasmons to guide and confine light on subwavelength scales is opening up new design possibilities for solar cells.
Full text - Harnessing plasmonics for solar cells | PDF (883 KB) - Harnessing plasmonics for solar cells
Colloidal quantum dot solar cells - pp133 - 135
Edward H. Sargent
doi:10.1038/nphoton.2012.33
Solar cells based on solution-processed semiconductor nanoparticles — colloidal quantum dots — have seen rapid advances in recent years. By offering full-spectrum solar harvesting, these cells are poised to address the urgent need for low-cost, high-efficiency photovoltaics.
Full text - Harnessing plasmonics for solar cells | PDF (2,517 KB) - Harnessing plasmonics for solar cells
Interview
Towards highly efficient solar cells - pp136 - 137
Interview with Stuart Wenham
doi:10.1038/nphoton.2012.37
Suntech Power is the world's largest producer of solar panels and has delivered more than 20 million photovoltaic panels to more than 80 countries around the globe. Nature Photonics spoke with Stuart Wenham, chief technology officer at Suntech Power, to find out more about its activities and visions.
Full text - Towards highly efficient solar cells | PDF (3,657 KB) - Towards highly efficient solar cells
Progress Article
Understanding intermediate-band solar cells - pp146 - 152
Antonio Luque, Antonio Martí & Colin Stanley
doi:10.1038/nphoton.2012.1
The intermediate-band solar cell is designed to provide a large photogenerated current while maintaining a high output voltage. Nanostructured materials and certain alloys have been employed in the practical implementation of these devices. This Progress Article reviews the range of different approaches and discusses how to resolve the remaining technical issues.
Abstract - Understanding intermediate-band solar cells | Full text - Understanding intermediate-band solar cells | PDF (1,679 KB) - Understanding intermediate-band solar cells
Review Articles
Polymer solar cells- pp153 - 161
Gang Li, Rui Zhu & Yang Yang
doi:10.1038/nphoton.2012.11
This Review summarizes recent progress in the development of polymer solar cells. It covers the scientific origins and basic properties of polymer solar cell technology, material requirements and device operation mechanisms, while also providing a synopsis of major achievements in the field over the past few years. Potential future developments and the applications of this technology are also briefly discussed.
Abstract - Polymer solar cells | Full text - Polymer solar cells | PDF (3,134 KB) - Polymer solar cells
The renaissance of dye-sensitized solar cells - pp133 - 135
Brian E. Hardin, Henry J. Snaith & Michael D. McGehee
doi:10.1038/nphoton.2012.22
This Review focuses on several recent promising innovations in the field of dye-sensitized solar cells. The key strategies for device engineering and dye design are illustrated, together with explanations as to how these factors affect the robustness and power conversion efficiency of the final device. The outlook towards the commercialization of dye-sensitized solar cells is also described.
Abstract - The renaissance of dye-sensitized solar cells | Full text - The renaissance of dye-sensitized solar cells | PDF (2,535 KB) - The renaissance of dye-sensitized solar cells