Acceptor Properties of Boron Subphthalocyanines in Fullerene Free Photovoltaics

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• 作者：Nicola Beaumont ; Jeffrey S. Castrucci ; Paul Sullivan ; Graham E. Morse ; Andrew S. Paton ; Zheng-Hong Lu ; Timothy P. Bender ; Tim S. Jones
• 刊名：Journal of Physical Chemistry C
• 出版年：2014
• 出版时间：July 10, 2014
• 年：2014
• 卷：118
• 期：27
• 页码：14813-14823
• 全文大小：593K
• ISSN：1932-7455

文摘

In this paper, we discuss the use of the typical electron-donor (donor) material boron subphthalocyanine chloride (Cl-BsubPc) and a chlorinated derivative (hexachloro boron subphthalocyanine chloride, Cl鈥揅l₆BsubPc) to act as electron-accepting (acceptor) materials and as replacements for C₆₀, when coupled with tetracene and pentacene as the electron-donor materials in organic photovoltaics (OPVs). A large decrease in photocurrent was observed when C₆₀ was replaced in the pentacene OPVs, although there was evidence of the harvesting of some triplets for the pentacene/Cl鈥揅l₆BsubPc OPV. Large increases in V_oc and stability were observed. Photoluminescence quenching, electron mobilities, and photovoltaic device characteristics are also presented and indicate the ambipolar quality of these small molecule organic semiconductors.