Results 61 to 70 of about 6,893 (211)

Understanding UV‐Induced Degradation Mechanisms in SHJ Solar Cells and Their Reversibility: The Role of Hydrogen and Doping

open access: yesProgress in Photovoltaics: Research and Applications, EarlyView.
This study investigates the UV‐induced degradation of silicon heterojunction cell precursors by isolating the impact of subcell layers under controlled UVA and UVB irradiation. Front hydrogenated amorphous silicon (i/n)a‐Si:H selective layers are identified as key degradation sites, leading to significant losses in minority carrier lifetime and iVoc ...
Hugo Lajoie   +7 more
wiley   +1 more source

Archaeological Findings from an Historic Caddo Site (41AN184) in Anderson County, Texas [PDF]

open access: yes, 2010
This article reports on the archaeological findings from a Historic Caddo site (41AN184)1 in the upper Neches River basin in Anderson County, in East Texas. The site was found in about 1960 by Ron Green (of Rockdale, Texas) when he was a teenager.
Perttula, Timothy K.
core   +1 more source

A Preliminary Archaeological Survey Along The Medio Creek Drainage, Southwestern Bexar County, Texas [PDF]

open access: yes, 1977
During late February, March and April of 1977, a preliminary archaeological survey was conducted along portions of Medio Creek, an intermittently running waterway in southwest Bexar County.
McGraw, A. Joachim
core   +2 more sources

High‐Mobility and Low Carrier Concentration Transparent Conducting Oxide Rear Contact for Bifacial CIGS Solar Cells

open access: yesProgress in Photovoltaics: Research and Applications, EarlyView.
This study investigates high‐mobility, low carrier concentration (CC) transparent conducting oxides (TCOs) as back contacts in bifacial Cu (In, Ga)Se2 (CIGS) solar cells. These TCOs enhance rear‐side light absorption in CIGS and external quantum efficiency, improving overall performance by offering high transparency, low reflectance, and maintaining ...
Nisika Nisika   +6 more
wiley   +1 more source

The Organization of Novaculite Tool Production: Quarry-Workshop Debitage Comparisons [PDF]

open access: yes, 2007
Arkansas novaculite, outcropping in the Ouachita Mountains of Arkansas and Oklahoma, has been an important regional lithic resource for thousands of years.
Trubitt, Mary Beth D.
core   +1 more source

Comparison on Module Performance and Degradation Robustness of Two‐, Three‐, and Four‐Terminal Perovskite Silicon Configurations Under Realistic Operating Conditions

open access: yesProgress in Photovoltaics: Research and Applications, EarlyView.
We compare the module performance of two‐terminal, three‐terminal, and four‐terminal perovskite/silicon modules in terms mismatch, thermalization, and interconnection losses. For each configuration, the bandgap energy of the perovskite layer is optimized for different locations.
Youri Blom   +4 more
wiley   +1 more source

Big Hole (41TV2161): Two Stratigraphically Isolated Middle Holocene Components in Travis County, Texas Volume I [PDF]

open access: yes, 2016
During April and May 2006, an archeological team from the Cultural Resources Section of the Planning, Permitting and Licensing Practice of TRC Environmental Corporation’s (TRC) Austin office conducted geoarcheological documentation and data recovery ...
Bury, Benjamin G.   +7 more
core   +1 more source

A Self‐Supervised Machine Learning Approach for the Estimation of Open‐Circuit Voltage Degradation in Photovoltaic Systems

open access: yesProgress in Photovoltaics: Research and Applications, EarlyView.
This study introduces a self‐supervised machine learning approach integrating physics‐based principles to estimate open‐circuit voltage (voc$$ {v}_{oc} $$) degradation in photovoltaic systems using SCADA data. By combining clustering and regression algorithms, our method detects performance deviations without labelled datasets.
Sandra Riaño   +4 more
wiley   +1 more source

Sharing the light, impact of solar parks on plant productivity, soil microbes and soil organic matter

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Solar parks enable renewable energy production at a large scale, thereby reducing greenhouse gas emissions. However, the effects of this change in land use on vegetation and soil health are still largely unknown. In this study, we determined the impacts of solar parks on vegetation, soil biota and soil carbon between and below solar panels.
Luuk Scholten   +4 more
wiley   +1 more source

The British Lower Palaeolithic of the early Middle Pleistocene [PDF]

open access: yes, 2011
The archaeology of Britain during the early Middle Pleistocene (MIS 19–12) is represented by a number of key sites across eastern and southern England. These sites include Pakefield, Happisburgh 1, High Lodge, Warren Hill, Waverley Wood, Boxgrove, Kent's
Hosfield, Rob
core   +1 more source

Home - About - Disclaimer - Privacy