文章基本信息

标题：臭化銀乳剤粒子表面の構造と分光増感色素J凝集体の吸着構造電子分光法と分析カラー蛍光電子顕微鏡法による
本地全文：下载
作者：西城浩志 ; 塩尻詢
期刊名称：日本写真学会誌
印刷版ISSN：0369-5662
电子版ISSN：1884-5932
出版年度：1993
卷号：56
期号：1
页码：50-57
出版社：The Society of Photographic Science and Technolgy of Japan
摘要：Progress on the surface study of silver bromide microcrystals grown in gelatin has been traced by electron spectroscopic analyses and by a cathode ray luminescence electron microscopy.Electron spectroscopic studies on silver bromide microcrystals grown in gelatin showed the chemical element of (111) surface of octahedral crystals to be bromide. The analysis of silver Auger peaks denied reconstruction of the (111) surface which was believed to occur for charge neutralization of a particle. The excess charge of bromide surface layer is cancelled by interstitial silver ions and adsorption of positive ions during crystal growth.Morphology of cyanine dye J-aggregates adsorbed on the silver bromide crystals was visualized in full color by a detection of color luminescence in a scanning electron microscope. The size of aggregates was about 30×70 nm, and with increasing dye adsorption, the aggregates grew in size not increased in number. The aggregates aligned on [110] or [210] directions on (100) suface of AgBr. With electron irradiation, luminescence color of some dye aggregates changed from yellowish green to orange red keeping their shape unchanged. These dye aggregates are believed that they absorbed incident electrons and released photoelectrons to result the change of luminescence color.