Best Selling Books by Michael Wolff

The 2nd Swift Generations novel, this one featuring Tom Swift (the one referred to as Tom Jr.). A rogue planet enters the solar system, and Tom Swift Jr. begins to investigate. Early on it is determined that the planet is possibly inhabited by intelligent life. Not only that, but it is broadcasting signals which affect the minds of many people on Earth. Tom decides to become involved with a Japanese attempt to reach the new world before it continues on into space. Upon arrival the expedition quickly learns that there''s literally more to the planet than what''s on the surface. The discoveries encountered bring along entirely new mysteries, as well as the possibility of access to a technology far beyond Tom''s wildest dreams.

Perovskite solar cells have become one of the most studied systems in the quest for new, cheap and efficient solar cell materials. Within a decade device efficiencies have risen to u003e25% in single-junction and u003e29% in tandem devices on top of silicon. This rapid improvement was in many ways fortunate, as e. g. the energy levels of commonly used halide perovskites are compatible with already existing materials from other photovoltaic technologies such as dye-sensitized or organic solar cells. Despite this rapid success, fundamental working principles must be understood to allow concerted further improvements. This thesis focuses on a comprehensive understanding of recombination processes in functioning devices. First the impact the energy level alignment between the perovskite and the electron transport layer based on fullerenes is investigated. This controversial topic is comprehensively addressed and recombination is mitigated through reducing the energy difference between the perovskite conduction band minimum and the LUMO of the ...

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