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Solar Silicon Processes: Technologies, Challenges, and Opportunities

Polycrystalline silicon (commonly called "polysilicon") is the material of choice for photovoltaic (PV) applications. Polysilicon is the purest synthetic material on the market, though its processing through gas purification and decomposition (commonly called "Siemens" process) carries high environmental risk. While many current optoelectronic applications require high purity, PV applications do not and therefore alternate processes and materials are being explored for PV grade silicon. Solar Silicon Processes: Technologies, Challenges, and Opportunities reviews current and potential future processing technologies for PV applications of solar silicon. It describes alternative processes and issues of material purity, cost, and environmental impact. It covers limits of silicon use with respect to high-efficiency solar cells and challenges arising from R&D activities. The book also defines purity requirements and purification processes of metallurgical grade silicon (MG-Si) and examines production of solar grade silicon by novel processes directly from MG-Si and/or by decomposition of silane gas in a fluidized bed reactor (FBR). Furthermore, the book: Analyzes past research and industrial development of low-cost silicon processes in view of understanding future trends in this field. Discusses challenges and probability of success of various solar silicon processes. Covers processes that are more environmentally sensitive. Describes limits of silicon use with respect to high-efficiency solar cells and challenges arising from R&D activities. Defines purity requirements and purification processes of MG-Si. Examines production of solar grade silicon directly from MG-Si.

My Life, My Love, My Legacy

Named a Best Book of 2017 by NPR The New York Times Book Review Editors' Choice The Washington Post’s Books to Read in 2017 USA Today, “New and Noteworthy” Read it Forward, Favorite Reads of January 2017 A Parade Magazine Pick "This book is distinctly Coretta's story . . . particularly absorbing. . . generous, in a manner that is unfashionable in our culture."―New York Times Book Review “Eloquent . . . inspirational"―USA Today The life story of Coretta Scott King―wife of Martin Luther King Jr., founder of the Martin Luther King Jr. Center for Nonviolent Social Change (The King Center), and singular twentieth-century American civil and human rights activist―as told fully for the first time, toward the end of her life, to Rev. Dr. Barbara Reynolds.

Renew Yourself A Six-Step Plan for More Meaningful Work

Unplanned careers affect everything and everyone. They can lead to frustration, negativity, and apathy at a time when we need to be focused, energized and motivated. Though your library career might have started "accidentally," you can overcome organizational restructuring, changing job titles, and shifting responsibilities by cultivating a mindful existence in the library workplace. Building on the simple and fun approach that have made her previous books bestsellers, Hakala-Ausperk offers up a DIY-style program for revisiting personal values, understanding your options, identifying skill gaps, and creating plans for growth. Whether you're a library veteran who's feeling burned out, a new LIS grad just starting out, or somewhere in mid-career, this book will introduce methods to help you examine your individual interests, desires, and goals; show you how to understand your workplace's priorities and culture, and offer tips for identifying where there's either a match or a gap; demonstrate how you can improve your current position; prepare you to move forward through the creation of a personalized strategic professional plan that addresses professional development, gaining additional experience, and other options for growth; include tips for effective self-marketing, networking through colleagues and friends, and acing an interview; present ways to stay happy and engaged in a new role or position; and offer guidance for sharing your skills and experience through mentorship, and retiring with grace. Ideal for both self-paced study and team-based staff development, this six-step plan will help readers renew themselves, their careers, and their organizations.

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