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Highlights

What happens to photogenerated charges in semiconductor nanowires?
What happens to photogenerated charges in semiconductor nanowires?
Jul 6, 2016

What happens to photogenerated charges in semiconductor nanowires?

Students: Mizrain Ramirez, Kleyser Agueda Lopez, Malik Ko Faculty Advisor:  M. Wu 

How? We use optical microscopy to determine the dynamics of photo-generated charges in individual semiconductor nanowire hetero-structures.
Investigation of Indium Free Transparent Conducting Oxides for Application in Photovoltaics
Investigation of Indium Free Transparent Conducting Oxides for Application in Photovoltaics
Sep 11, 2015

Investigation of Indium Free Transparent Conducting Oxides for Application in Photovoltaics

Dr. Ramana Chintalapalle Research Group

Transparent conducting oxide play a key role in photovoltaic (PV) devices. There has been much recent interest in finding alternative indium (In) free TCOs and even better performing alternative candidates to substitute for standard ITO.  The driving factors are: scarcity, unintended inter
Synthesis of Fullerene Derivatives for Potential Applications in OPV Devices
Synthesis of Fullerene Derivatives for Potential Applications in OPV Devices
Sep 11, 2015

Synthesis of Fullerene Derivatives for Potential Applications in OPV Devices

Dr. Luis Echegoyen's Research Group

We have separated Sc3N@D5h-C80 from Sc3N@C68 based on their chemical reactivity differences using the p-toluenesulfonyl tosyl hydrazone of phenyl butyric acid methyl ester (PCBM). We also performed for the first time the synthesis and characterization of five PCBM methano
Humacao PREM visits Rural Schools
Humacao PREM visits Rural Schools
Aug 5, 2015

Humacao PREM visits Rural Schools

Idalia Ramos, UPR-Humacao

In March-April 2015, approximately 50 PREM students, faculty and other volunteers visited six rural schools in the towns of Yabucoa and San Lorenzo, Puerto Rico. The activities included short talks and hands-on demonstrations from the Nanodays (NISENet) kits and others developed by our pro
Bubble formation in chloroform at negative pressures
Bubble formation in chloroform at negative pressures
Aug 5, 2015

Bubble formation in chloroform at negative pressures

Melissa López and José O. Sotero-Esteva, UPR-Humacao

The aim of this project if to detect and characterize nucleation sites when a local cavity starts to form, in particular to detect cavitation sites in molecular dynamics simulations of liquid chloroform with and without carbon nanotubes.
Ultraviolet Tunable MoS2/p-Silicon Junction Diode
Ultraviolet Tunable MoS2/p-Silicon Junction Diode
Aug 5, 2015

Ultraviolet Tunable MoS2/p-Silicon Junction Diode

Nicholas Pinto (UPR-Humacao) and A.T. Charlie Johnson Jr. (PENN)

MoS2 single crystals were transferred onto the edge of a p-Si/SiO2 wafer, forming an abrupt heterogeneous junction diode at the MoS2/p-Si interface. When electrically characterized as a field effect transistor, MoS2 exhibits an n-type response and can be doped in the presence of ultraviole
Hysteretic Adsorption of CO2 onto a Cu2(pzdc)2(bpy) Porous Coordination Polymer and Concomitant Framework Distortion
Hysteretic Adsorption of CO2 onto a Cu2(pzdc)2(bpy) Porous Coordination Polymer and Concomitant Framework Distortion
Aug 4, 2015

Hysteretic Adsorption of CO2 onto a Cu2(pzdc)2(bpy) Porous Coordination Polymer and Concomitant Framework Distortion

K. Riascos,a  A.J. Schroeder,b M.R. Arend,b P. G. Evans,b and A. J. Hernández-Maldonadoa*  a Department of Chemical Engineering, University of Puerto Rico-Mayagüez Campus, Mayagüez, PR 00681-9000    b Department of Materials Science and Engineering, University of Wisconsin-Madison,Madison
In a recent publication resulting from a collaboration between the IRG2 of the Wisconsin MRSEC and the University of Puerto Rico Mayaguez through the NSF-sponsored Partnerships for Research and Education in Materials (PREM) program, Prof. Hernandez-Maldonado and coworkers investigated the
Combination treatment with synthetic β-peptide enhances the antifungal activities of azoles in Candida albicans
Combination treatment with synthetic β-peptide enhances the antifungal activities of azoles in Candida albicans
Aug 4, 2015

Combination treatment with synthetic β-peptide enhances the antifungal activities of azoles in Candida albicans

Camilo A. Mora-Navarro, Jean C. Caraballo León, Madeline Torres-Lugo and Patricia Ortiz-Bermúdez Department of Chemical Engineering, University of Puerto Rico-Mayagüez, PR.

Fungal infections such as candidiasis represent an important human health concern worldwide due to high mortality rates, of more than 50%, specifically in those people who are immunocompromised.  In particular risk are those patients undergoing chemotherapy, that suffer from AIDS and thos
Aug 4, 2015

Do “Hot” Charge-Transfer Excitons Promote Free Carrier Generation?

G. Nan, X. Zhang and G. Lu (California State University Northridge)

In organic photovoltaics, the role of hot charge-transfer (CT) excitons on free carrier generation is currently under intense debate. In this project, we carry out first-principles time-dependent density functional theory calculations to examine hot CT dissociation in polymer/fullerene het
Aug 4, 2015

PREM- Computational Research and Education for Emergent Materials

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National Science Foundation
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