The route towards low-cost solution-processed high Voc solar cells

Eran Edri, Saar Kirmayer, Lee Barnea-Nehoshtan, Sabyasachi Mukhopadhyay, Michael Kulbak, Yaron Tidhar, Boris Rybtchinski, David Cahen, Gary Hodes

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


All photovoltaic device efficiencies are limited by the 'threshold' process inherent in how photovoltaic devices work: a photon above a certain energy level is required to excite an electron that will later be extracted as electrical current. This sets a limit to the efficiency of solar power conversion to electricity of a 'single threshold' system to about 30%. Differentiating the threshold to two 'steps' increases the theoretical limit to 42%. One of the proposed ways to achieve this is by splitting the solar spectrum and guide each part to a different device, each with a different threshold energy, matching a different portion of the solar spectrum. If the devices are stacked, this is called a tandem configuration. To make such a approach worthwhile, a photovoltaic device that uses the high-energy portion of the solar spectrum efficiently is required. Current available options are extremely costly and are not feasible for large-scale application, or are insufficiently inefficient to make their use worthwhile.

Original languageEnglish
Title of host publication2014 IEEE Photonics Conference, IPC 2014
PublisherInstitute of Electrical and Electronics Engineers
Number of pages2
ISBN (Electronic)9781457715044
StatePublished - 22 Dec 2014
Event27th IEEE Photonics Conference, IPC 2014 - San Diego, United States
Duration: 12 Oct 201416 Oct 2014

Publication series

Name2014 IEEE Photonics Conference, IPC 2014


Conference27th IEEE Photonics Conference, IPC 2014
Country/TerritoryUnited States
CitySan Diego

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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