"The compositions that people use today are much more elaborate than the methylammonium lead iodide
," said Case.
Roth, "Improved performance lead iodide
nuclear radiation detectors," Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol.
Now, the lab of Mohammad Khaja Nazeeruddin at EPFL Valais Wallis, with colleagues at the University of Cordoba, has discovered that they can improve perovskite stability by introducing the large organic cation guanidinium (CH6N3+) into methylammonium lead iodide
perovskites, which are among the most promising alternatives in the group today.
On a less optimistic note, researchers of the Energy Materials and Surface Sciences Unit at the Okinawa Institute of Science and Technology Graduate University have been studying the short lifespan of methylammonium lead iodide
perovskite ([MAPbl.sub.3]), a common type of perovskite material.
The mixed-cation materials were obtain through a mortar-and-pestle grinding method where a 1: 1: 2 molar ratios of MA iodide, aromatic ammonium iodide, and lead iodide
were mixed and ground for 30 minutes.
GROWTH OF LEAD IODIDE
SINGLE CRYSTALS SYNTHESIZED USING LOW TEMPERATURE SOLUTION TECHNIQUE.
Professor Hyatt and his team created a solid material for immobilisation of iodine with the formula Pb5(VO4)3I, by heating a mixture of lead iodide
, lead oxide and vanadium oxide.
However, one team did get unusual lead iodide
crystals from space experiments conducted two years ago (SN: 9/23/89, p.206).
The scientists fabricated the new solar cell by drop-casting a solution of lead iodide
, methylammonium iodide, and 5-ammoniumvaleric acid iodide through a porous carbon film.
Scientists first attempted to goad rain from the sky with silver and lead iodide
in the 1940s.