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Tuesday, January 19th, 2021
| Time | Event |
| 12:10a | Capitol Riot Suspect Plotted To Sell Stolen Pelosi Laptop To Russian Intelligence, Authorities Say An anonymous reader quotes a report from NBC News: A Pennsylvania woman accused of being one of the Capitol rioters told a former "romantic partner" that she planned to steal a laptop computer from House Speaker Nancy Pelosi's office and sell it to Russian intelligence, court documents revealed Monday. The woman, Riley June Williams, 22, was on the run, charged with disorderly conduct on Capitol grounds with the intent to disturb a session of Congress and other charges after her former flame turned her in. "Williams is not in custody," a federal law enforcement officials said Monday afternoon. William's ex, who was described in Special Agent Jonathan Lund's charging document as W1 (witness one), called the FBI and told it that she "intended to send the computer device to a friend in Russia, who then planned to sell the device to SVR, Russia's foreign intelligence service." "According to W1, the transfer of the computer device to Russia fell through for unknown reasons and Williams still has the computer device or destroyed it," the document states. Lund said the device and circumstances of what Williams was doing with it remain under investigation. The laptop was reported stolen from the conference room on Jan. 6 but was "only used for presentations," according to Pelosi's deputy chief of staff, Drew Hamill. 
Read more of this story at Slashdot.  |
| 2:10a | Capsaicin Spices Up Perovskite-Based Solar Cells To Record Efficiencies "Researchers claim achievement of new record photovoltaic conversion efficiencies for perovskite-based solar cells by spicing them up with a little capsaicin," writes Slashdot reader ffkom, adding: "Of course everyone who loves to eat chilis already knew capsaicin energizes you to record levels." The researchers have published their findings in the journal Joule. From the report: Perovskite solar cells (PSCs) suffer from significant nonradiative recombination, limiting their power conversion efficiencies. Here, for the first time, we directly observe a complete transformation of perovskite MAPbI 3 surface region energetics from p- to n-type during defect passivation caused by natural additive capsaicin, attributed to the spontaneous formation of a p-n homojunction in perovskite active layer. We demonstrate that the p-n homojunction locates at 100 nm below perovskite surface. The energetics transformation and defect passivation promote charge transport in bulk perovskite layer and at perovskite/PCBM interface, suppressing both defect-assisted recombination and interface carrier recombination. As a result, an efficiency of 21.88% and a fill factor of 83.81% with excellent device stability are achieved, both values are the highest records for polycrystalline MAPbI 3 based p-i-n PSCs reported to date. The proposed new concept of synergetic defect passivation and energetic modification via additive provides a huge potential for further improvement of PSC performance.
Read more of this story at Slashdot. |
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