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Solar Advisor Model; Session: Modeling and Analysis

Description: This project supports the Solar America Initiative by: (1) providing a consistent framework for analyzing and comparing power system costs and performance across the range of solar technologies and markets, PV, solar heat systems, CSP, residential, commercial and utility markets; (2) developing and validating performance models to enable accurate calculation of levelized cost of energy (LCOE); (3) providing a consistent modeling platform for all TPP's; and (4) supporting implementation and usag… more
Date: April 1, 2008
Creator: Blair, N.
Partner: UNT Libraries Government Documents Department

Thermal Management of Batteries in Advanced Vehicles Using Phase-Change Materials

Description: This Powerpoint presentation examines battery thermal management using PCM and concludes excellent performance in limiting peak temperatures at short period extensive battery use; although, vehicle designers will need to weigh the potential increase in mass and cost associated with adding PCM against the anticipated benefits.
Date: December 1, 2007
Creator: Kim, G.-H.; Gonder, J.; Lustbader, J. & Pesaran, A.
Partner: UNT Libraries Government Documents Department

Intrinsic DX Centers in Ternary Chalcopyrite Semiconductors

Description: The conclusions of this report are: (1) intrinsic donor-type defects In{sub Cu}, Ga{sub Cu}, and V{sub Se}, and their complexes with V{sub Cu} cause metastability, but also act to limit V{sub OC}; (2) growth conditions which minimize these defects (Cu-rich/Se-rich) are very different from those currently used; and (3) overcoming V{sub OC} limitation requires to address other issues and trade-offs.
Date: May 1, 2008
Creator: Lany, S. & Zunger, A.
Partner: UNT Libraries Government Documents Department

Session: CSP Advanced Systems -- Advanced Overview

Description: The project description is: (1) it supports crosscutting activities, e.g. advanced optical materials, that aren't tied to a single CSP technology and (2) it supports the 'incubation' of new concepts in preliminary stages of investigation.
Date: April 1, 2008
Creator: Mehos, M.
Partner: UNT Libraries Government Documents Department

Design of Shallow p-type Dopants in ZnO

Description: ZnO is a promising material for short wave-length opto-electronic devices such as UV lasers and LEDs due to its large exciton binding energy and low material cost. ZnO can be doped easily n-type, but the realization of stable p-type ZnO is rather difficult. Using first-principles band structure methods the authors address what causes the p-type doping difficulty in ZnO and how to overcome the p-type doping difficulty in ZnO.
Date: May 1, 2008
Creator: Wei, S.H.; Li, J. & Y., Yan.
Partner: UNT Libraries Government Documents Department

EE&RE; Session: CIGS

Description: This project supports the Solar America Initiative by carrying out work on target topics identified for Photovoltaic Systems: (1) Improving cell and module efficiency of thin film Cu(In,Ga)Se2 materials; (2) Implementing the Science and Technology Facility (S&TF) and the Process Development and Integration Laboratory (PDIL) to facilitate laboratory/industry interaction in developing PV manufacturing technologies; (3) Addressing industrial issues in materials and manufacturing processes with… more
Date: April 1, 2008
Creator: Contreras, M.
Partner: UNT Libraries Government Documents Department

Strategic Energy Analysis at NREL

Description: This presentation on strategic energy analysis at NREL was presented as part of NREL's Industry Growth Forum on in November 2007.
Date: November 1, 2007
Creator: Arent, D. J.
Partner: UNT Libraries Government Documents Department

Modeling and Analysis Session: Market, Value, and Policy Analysis

Description: The Primary objectives: to provide a broad range of analytical support to the Solar Program; and to anticipate and respond to the rapidly evolving analytical needs of the Solar Program. Three broad types of analysis are being carried out under this project including: (1) Market analysis: Developing a PV market penetration model--the SolarDS model--and other tools, in order to gain insight into the factors influencing market penetration of PV technology in U.S. markets. (2) Value analysis: Provi… more
Date: April 1, 2008
Creator: Margolis, R. M.
Partner: UNT Libraries Government Documents Department

Three-Dimensional Lithium-Ion Battery Model

Description: Nonuniform battery physics can cause unexpected performance and life degradations in lithium-ion batteries; a three-dimensional cell performance model was developed by integrating an electrode-scale submodel using a multiscale modeling scheme.
Date: May 1, 2008
Creator: Kim, G. H. & Smith, K.
Partner: UNT Libraries Government Documents Department

2008 Solar Annual Review Meeting, Session: Parabolic Troughs

Description: The project description is R and D activities at NREL and Sandia aimed at lowering the delivered energy cost of parabolic trough collector systems and FOA awards to support industry in trought development. The primary objectives are: (1) support development of near-term parabolic trought technology for central station power generation; (2) support development of next-generation trought fields; and (3) support expansion of US trough industry. The major FY08 activities were: (1) improving reflect… more
Date: April 1, 2008
Creator: Kutscher, Chuck
Partner: UNT Libraries Government Documents Department

Do the Defects Make it Work? Defect Engineering in π - Conjugated Polymer Films and Their Solar Cells

Description: The summaries of this report are: (1) charged defects produce 10{sup 15}-10{sup 17} cm{sup -3} free carriers; (2) treatment with nucleophiles decreases p{sub f} and {sigma} while treatment with electrophiles does not change p{sub f} but increases {sigma}; (3) both treatments increase {mu}{sub p}, L{sub ex} and stability against photo-degradation; (4) charged defects can improve OPV by increasing conductivity and creating interfacial electric fields but they hurt {mu}{sub p}, L{sub ex} and chemi… more
Date: May 1, 2008
Creator: Gregg, B. A.; Wang, D.; Reese, M. O. & Kopidakis, N.
Partner: UNT Libraries Government Documents Department

Session: CSP Advanced Systems: Optical Materials

Description: The Optical Materials project description is to characterize advanced reflector, perform accelerated and outdoor testing of commercial and experimental reflector materials, and provide industry support.
Date: April 1, 2008
Creator: Kennedy, C.
Partner: UNT Libraries Government Documents Department
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