Natural & Applied Sciences

Evolution of the Mobility Gap with Thickness in Hydrogen-Diluted Intrinsic Si:H Materials in the Phase Transition Region and Its Effect on p-i-n Solar Cell Characteristics

Insights into the growth processes and evolution of microstructure in intrinsic h

Progress in Amorphous Silicon Based Solar Cell Technology

As the negative environmental effects of the current use of non-renewable energy

Stable a-Si: H-Based Multijunction Solar Cells with Guidance from Real-Time Optics

Phase diagrams that characterize plasma-enhanced chemical vapor deposition of Si

Analytical model for the optical functions of amorphous semiconductors from the near-infrared to ultraviolet: Applications in thin film photovoltaics

We have developed a Kramers–Kronig consistent analytical expression to fit the me

Thickness Evolution of the Microstructural and Optical Properties of Si:H Films in the Amorphous-to-Microcrystalline Phase Transition Region

The ability to characterize the phase of the intrinsic (i) layers incorporated in

Mobility gap profiles in Si: H intrinsic layers prepared by H2-dilution of SiH4: effects on the performance of p–i–n solar cells

Insights into the growth processes and microstructural evolution for intrinsic (i

Student Inquiries into Neglected Research for a Sustainable Society: Communication and Application

By applying the interdisciplinary approach of Science, Technology & Society,

Intrinsic and light induced gap states in aSi:H materials and solar cells—effects of microstructure

Thin Solid Films, Jan 1, 2004 The effects of microstructure on the gap states of

Optimization of protocrystalline silicon p-type layers for amorphous silicon n–i–p solar cells

Real time spectroscopic ellipsometry has been applied to develop deposition phase

Room Temperature Annealing of Fast States from 1 sun Illumination in Protocrystalline Si:H Materials and Solar Cells

In order to obtain more insight into the nature of the recovery in the light indu

A New Approach to the Analysis of Forward Bias Dark Current Characteristics of a-Si:H Solar Cells

Generally the dark forward bias current voltage (JD-V) characteristics of a-Si:H

Evolution of microstructure and phase in amorphous, protocrystalline, and microcrystalline silicon studied by real time spectroscopic ellipsometry

Real time spectroscopic ellipsometry has been applied to develop deposition phase

Compound Parabolic Concentrators for Solar Water Heat Pasteurization: Numerical Simulation

Many people in less developed countries drink water with microbial contamination,

Teaching Science by Encouraging Innovation in Appropriate Technologies for Sustainable Development

Appropriate technologies, those able to be easily and economically constructed fr

Teaching Physics Using Appropriate Technology Projects

Appropriate technologies able to be easily and economically constructed from read

Foreign Languages and the Environment: A Collaborative Instructional Project

The project described here—a collaborative venture between Modern Languages and P

Appropedia as a Tool for Service Learning in Sustainable Development

Numerous studies have demonstrated that university students are capable of contri

Utilization of Virtual Globes for Open Source Industrial Symbiosis

Several proprietary industrial symbiosis software tools have been developed, howe

Overcoming Technical Constraints for Obtaining Sustainable Development with Open Source Appropriate Technology

Open source appropriate technology (OSAT) refers to technologies that provide for

Overcoming Language Challenges of Open Source Appropriate Technology for Sustainable Development in Africa

Despite enormous efforts over the course of several decades, sustainable developm

Open Design-Based Strategies to Enhance Appropriate Technology Development

The appropriate technology (AT) movement is being driven by inventors and innovat

Hybrid Virtual- and Field Work-based Service Learning with Green Information Technology and Systems Projects

Traditional engineering service learning (SL) projects can be classified as: 1) c

Viability of Small-Scale Arsenic-Contaminated Water Purification Technologies for Sustainable Development in Pakistan

Drinking arsenic-contaminated water leads to a series of health problems that has

Barriers to Appropriate Technology Growth in Sustainable Development

Given the urgency of development problems world-wide, as well as the opportunitie

Effects of Substrate Temperature on Indium Gallium Nitride Nanocolumn Crystal Growth

Indium gallium nitride films with nanocolumnar microstructure were deposited with

Examining Social Barriers to Open Source Appropriate Technology and Innovation through Collaboration with Information and Communication Technology

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Analytical Model for the Optical Functions of Indium Gallium Nitride with Application to Thin Film Solar Photovoltaic Cells

This paper presents the preliminary results of optical characterization using spe

Effects on Amorphous Silicon Photovoltaic Performance from High-temperature Annealing Pulses in Photovoltaic Thermal Hybrid Devices

There is a renewed interest in photovoltaic solar thermal (PVT) hybrid systems, w

The Case for Open Source Appropriate Technology

Much of the widespread poverty, environmental desecration, and waste of human lif

Optimizing the solar water disinfection (SODIS) method by decreasing turbidity with NaCl

Solar water disinfection (SODIS) has proven to be effective at reducing diarrheal