Sergio Castellanos

ORCID: 0000-0003-3935-6701
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About
Contact & Profiles
Research Areas
  • Silicon and Solar Cell Technologies
  • Thin-Film Transistor Technologies
  • Energy and Environment Impacts
  • Semiconductor materials and interfaces
  • Silicon Nanostructures and Photoluminescence
  • Smart Grid Energy Management
  • Integrated Energy Systems Optimization
  • Social Acceptance of Renewable Energy
  • Infrastructure Resilience and Vulnerability Analysis
  • Social Robot Interaction and HRI
  • Solar Radiation and Photovoltaics
  • Electric Vehicles and Infrastructure
  • Global Energy and Sustainability Research
  • Disaster Management and Resilience
  • Advanced Battery Technologies Research
  • Psychology Research and Bibliometrics
  • Integrated Circuits and Semiconductor Failure Analysis
  • Photovoltaic Systems and Sustainability
  • Psychiatry, Mental Health, Neuroscience
  • Advanced Surface Polishing Techniques
  • Microgrid Control and Optimization
  • Psychological Treatments and Disorders
  • Environmental Justice and Health Disparities
  • Psychology and Mental Health
  • Child and Adolescent Psychosocial and Emotional Development

The University of Texas at Austin
2021-2025

Institut polytechnique de Grenoble
2023

Centre National de la Recherche Scientifique
2023

Université Grenoble Alpes
2023

Laboratoire d'Informatique de Grenoble
2023

Sonora Institute of Technology
2017-2022

University of California, Berkeley
2017-2021

California Institute for Regenerative Medicine
2018-2020

Energy Biosciences Institute
2017-2019

Massachusetts Institute of Technology
2010-2017

Energy equity and justice have become priority considerations for policymakers, practitioners, scholars alike. To ensure that energy is incorporated into actual decisions analysis, it necessary to design, use, continually improve metrics. In this article, we review the literature practices surrounding such We present a working definition equity, connect them both criteria frameworks of then large sampling metrics, including those focused on vulnerability, wealth creation, poverty, life...

10.1146/annurev-environ-112621-063400 article EN Annual Review of Environment and Resources 2023-11-13

Distributed photovoltaics (PV) have played a critical role in the deployment of solar energy, currently making up roughly half global PV installed capacity. However, there remains significant unused economically beneficial potential. Estimates total technical potential for rooftop systems United States calculate generation comparable to approximately 40% 2016 national electric-sector sales. To best take advantage potential, effective analytic tools that support strategies and aggressive...

10.1088/1748-9326/aa7857 article EN cc-by Environmental Research Letters 2017-12-01

Abstract A severe winter storm in February 2021 impacted multiple infrastructure systems Texas, leaving over 13 million people without electricity and/or water, potentially $100 billion economic damages, and almost 250 lives lost. While the entire state was by temperatures up to 10 °C colder than expected for this time of year, as well levels snow ice accumulation not observed decades, responses outcomes from communities were inconsistent exacerbated prevailing social inequities that are...

10.1088/2516-1083/aca9b4 article EN cc-by Progress in Energy 2023-01-01

In February 2021, Winter Storm Uri left 11 million people in Texas without power, caused widespread water outages, and inflicted billions of dollars damage. While the severity this event was primarily by electricity generator failures, it made worse decisions utilities state regulators before, during, after event. This study seeks to (1) evaluate procedures electric during Uri, (2) provide a set recommendations improve resilience energy systems preparation for future extreme weather events....

10.1016/j.ijdrr.2024.104309 article EN cc-by International Journal of Disaster Risk Reduction 2024-02-02

The bulk of global greenhouse gas emissions in the following decades will come from rising living standards emerging economies. To address this coupled challenge, low-emission development strategies are essential to mitigate while jointly allowing developing countries increase resilience. However, there has been a widespread policy gap between long-term needed achieve net zero and proposed national electrical planning documents. Honduras, historically one most climate-vulnerable countries,...

10.1021/acs.est.4c13433 article EN Environmental Science & Technology 2025-02-24

This manuscript concerns the application of infrared birefringence imaging (IBI) to quantify macroscopic and microscopic internal stresses in multicrystalline silicon (mc-Si) solar cell materials. We review progress date, advance four closely related topics. (1) present a method decouple thermally-induced residual bulk defect stresses. In contrast previous reports, wafer-sized samples are generally found be less than 5 MPa, while defect-related can several times larger. (2) describe unique...

10.1063/1.3468404 article EN Journal of Applied Physics 2010-09-15

In recent years, high-performance multicrystalline silicon (HPMC-Si) has emerged as an attractive alternative to traditional ingot-based (mc-Si), with a similar cost structure but improved cell performance. Herein, we evaluate the gettering response of mc-Si and HPMC-Si. Microanalytical techniques demonstrate that HPMC-Si share lifetime-limiting defect types have different relative concentrations distributions. shows substantial lifetime improvement after P-gettering compared mc-Si, chiefly...

10.1109/jphotov.2016.2540246 article EN publisher-specific-oa IEEE Journal of Photovoltaics 2016-04-05

Abstract Silicon wafers comprise approximately 40% of crystalline silicon module cost and represent an area great technological innovation potential. Paradoxically, unconventional wafer‐growth techniques have thus far failed to displace multicrystalline Czochralski silicon, despite four decades innovation. One the shortcomings most materials has been a persistent carrier lifetime deficit in comparison established wafer technologies, which limits device efficiency In this perspective article,...

10.1002/pip.2699 article EN publisher-specific-oa Progress in Photovoltaics Research and Applications 2015-10-15

When multiple types of disasters occur sequentially – a cascading disaster certain adaptive capacities might become temporarily ineffective or invalid. Advancing an understanding community resilience in the context disasters, current study provides empirical evidence hybrid hyperlocal practice (HCoP), novel communicative process facilitated by organizing, during 2021 Texas, U.S.A. winter storm. Using interviews with 30 residents city that experienced critical infrastructure failures⁣ i.e....

10.1080/00909882.2024.2341082 article EN Journal of Applied Communication Research 2024-04-25

10.1038/s41560-024-01525-7 article EN Nature Energy 2024-04-30

Isothermal annealing above 1250 °C has been reported to reduce the dislocation density in multicrystalline silicon (mc-Si), presumably by pairwise annihilation. However, this high-temperature process may also cause significant impurity contamination, canceling out positive effect of reduction on cell performance. Here, efforts are made annihilate dislocations mc-Si temperatures as low 820 °C, with assistance an additional driving force stimulate motion. A more than 60% is observed for...

10.1109/jphotov.2012.2219851 article EN IEEE Journal of Photovoltaics 2012-10-15

Dislocation clusters in multicrystalline silicon limit solar cell performance by decreasing minority carrier diffusion length. Studies have shown that the recombination strength of dislocation can vary up to two orders magnitude, even within same wafer. In this contribution, we combine a surface-analysis approach with bulk characterization techniques explore underlying root cause variations among different clusters. We observe higher consist dislocations larger variation line vector,...

10.1063/1.4876445 article EN Journal of Applied Physics 2014-05-14
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