Volume 93 Issue 5 | p. 6 | News of The Week
Issue Date: February 2, 2015 | Web Date: January 29, 2015

Large, High-Quality Crystals Boost Perovskite Performance

Materials: Improvements in size and crystallinity bolster perovskite’s charge transport properties
Department: Science & Technology
News Channels: Materials SCENE, Environmental SCENE
Keywords: Perovskite, solar cell, crystal, photovoltaic

One way to make bigger and better perovskite solar cells could be making bigger and better perovskite crystals, according to three new studies.

Perovskite materials are inexpensive, easy to synthesize, and already competitive with benchmark semiconductors like crystalline silicon in terms of how efficiently they convert sunlight into electricity. Conventional perovskite cells use films of polycrystalline methylammonium lead iodide. Electrical charge carriers within typical microscopic crystals travel less than a micrometer on average before crashing . . .

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