00616nas a2200157 4500008004100000022001400041245012900055210006900184260001600253300001100269490000800280100002300288700002600311700002000337856010100357 2016 eng d a0021-897900aGeneralized quantum efficiency analysis for non-ideal solar cells: Case of Cu 2 ZnSnSe 40 aGeneralized quantum efficiency analysis for nonideal solar cells cJul-01-2016 a0145050 v1191 aHages, Charles, J.1 aCarter, Nathaniel, J.1 aAgrawal, Rakesh uhttp://aip.scitation.org/doi/10.1063/1.4939487http://aip.scitation.org/doi/pdf/10.1063/1.493948701801nas a2200169 4500008004100000022001400041245010100055210006900156300001400225490001600239520122000255653002101475100002301496700002101519700002001540856007101560 2016 eng d a0927-024800aOptoelectronic and material properties of nanocrystal-based \{CZTSe\} absorbers with Ag-alloying0 aOptoelectronic and material properties of nanocrystalbased CZTSe a342 - 3480 v145, Part 33 aAbstract In this work, the benefits of Ag-alloying in kesterite solar cells are explored in terms of tunable band gap, improved grain growth, improved minority carrier lifetime, reduced defect formation, and reduced potential fluctuations for (Ag,Cu)2ZnSnSe4 (ACZTSe) absorbers relative to Cu2ZnSnSe4 (CZTSe). The enhanced optoelectronic properties are shown to scale here with the degree of Ag-alloying in ACZTSe. The impacts of these effects on device performance are discussed, with improvement in average device performance/open-circuit voltage reported for \{ACZTSe\} (5%-Ag) absorbers relative to \{CZTSe\} absorbers with similar band gap. These initial results are promising for the Ag-alloyed \{ACZTSe\} material system as \{VOC\} limitations are the primary cause of poor device performance in kesterite solar cells, and cation substitution presents a unique method to tune the defect properties of kesterite absorbers. Herein, nanoparticle synthesis and large-grain \{ACZTSe\} absorber formation is described followed by material and optoelectronic characterization. Additionally, \{RTP\} processing is presented to achieve fully selenized large-grain chalcogenide absorbers from sulfide nanocrystal inks.10aCharacterization1 aHages, Charles, J.1 aKoeper, Mark, J.1 aAgrawal, Rakesh uhttp://www.sciencedirect.com/science/article/pii/S0927024815005504