Erik Wallin

Feb 18, 2024 | nature.com | Jan Keller |Olivier Donzel-Gargand |Natalia Martin |Natalia Martín |Melike Babucci |Erik Wallin | +1 more

AbstractChalcopyrite-based solar cells have reached an efficiency of 23.35%, yet further improvements have been challenging. Here we present a 23.64% certified efficiency for a (Ag,Cu)(In,Ga)Se2 solar cell, achieved through the implementation of a series of strategies.

Jun 12, 2023 | report.woodard.com | Erik Wallin

Portable toilet rentals are ubiquitous and show up in a variety of locations, including construction sites, outdoor events, and outdoor recreation areas. For those in the business of renting portable restrooms, sales tax may not be number one on a list of concerns. However, understanding the tax implications of renting portable privies is important, as it can impact the rental prices clients pay and the compliance responsibilities of the rental business.