Sarah Holliday

In the sky above a little village, magical sisters Sunny and Stormy control the weather with their unique powers. But while Sunny is adored for her warmth and light, Stormy feels unloved for her wind and rain. When Stormy's jealousy causes chaos in the village, she flies away, believing she has ruined everything. But Sunny can't restore balance without her. Together the sisters must learn that embracing their differences and accepting themselves is the key to bringing out the best in each other.

When Stormy's jealousy of her sister Sunny sparks chaos in the village, can they restore harmony and uncover the magic of their combined powers before it's too late? In the sky above a little village, magical sisters Sunny and Storm control the weather with their unique powers. But while Sunny is adored for her warmth and light, Storm feels unloved for her wind and rain. When Storm's jealousy causes chaos in the village, she flies away, believing she has ruined everything. But Sunny can't restore balance without her.Together the sisters must learn that embracing their differences and accepting themselves is the key to bringing out the best in each other. A celebration of sisterhood, self-acceptance and the power of unity.

This book reports on the design, synthesis and characterization of new small molecule electron acceptors for polymer solar cells. Starting with a detailed introduction to the science behind polymer solar cells, the author then goes on to review the challenges and advances made in developing non-fullerene acceptors so far. In the main body of the book, the author describes the design principles and synthetic strategy for a new family of acceptors, including detailed synthetic procedures and molecular modeling data used to predict physical properties. An indepth characterization of the photovoltaic performance, with transient absorption spectroscopy (TAS), photo-induced charge extraction, and grazing incidence X-ray diffraction (GIXRD) is also included, and the author uses this data to relate material properties and device performance. This book provides a useful overview for researchers beginning a project in this or related areas.

This book reports on the design, synthesis and characterization of new small molecule electron acceptors for polymer solar cells. Starting with a detailed introduction to the science behind polymer solar cells, the author then goes on to review the challenges and advances made in developing non-fullerene acceptors so far. In the main body of the book, the author describes the design principles and synthetic strategy for a new family of acceptors, including detailed synthetic procedures and molecular modeling data used to predict physical properties. An indepth characterization of the photovoltaic performance, with transient absorption spectroscopy (TAS), photo-induced charge extraction, and grazing incidence X-ray diffraction (GIXRD) is also included, and the author uses this data to relate material properties and device performance. This book provides a useful overview for researchers beginning a project in this or related areas.