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jimoyu

铁杆木虫 (小有名气)

大将军

应助: 1 (幼儿园)
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虫号: 1170030
注册: 2010-12-14
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专业: 高分子物理与高分子物理化

[交流] 日本研发出全球最轻薄柔性太阳能电池，厚度仅保鲜膜1/5，效率4.2%已有18人参与

日本科学技术振兴机构(JST；Japan Science and Technology Agency)4日发布新闻稿宣布，已携手东京大学研发出全球最薄、最轻的有机太阳能电池，其厚度仅有1.8-1.9μm，仅有家用保鲜膜的1/5厚。 JST指出，研究团队是在厚度仅1.4μm的超薄塑胶薄膜基板上均匀涂上溶有有机半导体的墨水(Ink)而成功研发出上述全球最轻薄的太阳能电池；据东大表示，目前全球最薄的太阳能电池厚度为25μm，而此次新研发的产品厚度仅有其约1/14。 JST表示，随著成功实现太阳能电池的超轻化、超薄化，可望进一步带动太阳能电池应用于智慧型手机等行动装置上。

JST指出，该款全球最轻薄的太阳能电池转换率为4.2%，虽逊于现行太阳能电池的10-20%水准，惟因该款产品可像头发一样弯曲，且弯曲后转换率不会受到任何影响(转换率仍可维持于4.2%)，加上生产该款产品无需复杂工程、也无需高价生产设备，故可以低成本进行生产。 JST并指出，该款全球最轻薄太阳能电池每公克(0.25平方公尺)的发电量为10W，发电量达现行安装于家庭屋顶的太阳能电池的25倍(在换算成相同重量的情况下)。据日经指出，JST今后计划藉由改良发电层的材料，将该款全球最轻薄太阳能电池的转换率提升至10%水准。上述全球最轻薄太阳能电池的相关论文已于4月4日刊载于英国科学杂志「Nature Communications」的电子板上，论文标题为“Ultrathin and lightweight organic solar cells with high flexibility”。

Application-specific requirements for future lighting, displays and photovoltaics will include large-area, low-weight and mechanical resilience for dual-purpose uses such as electronic skin, textiles and surface conforming foils. Here we demonstrate polymer-based photovoltaic devices on plastic foil substrates less than 2 μm thick, with equal power conversion efficiency to their glass-based counterparts. They can reversibly withstand extreme mechanical deformation and have unprecedented solar cell-specific weight. Instead of a single bend, we form a random network of folds within the device area. The processing methods are standard, so the same weight and flexibility should be achievable in light emitting diodes, capacitors and transistors to fully realize ultrathin organic electronics. These ultrathin organic solar cells are over ten times thinner, lighter and more flexible than any other solar cell of any technology to date.

文章链接http://www.nature.com/ncomms/jou ... ml#/acknowledgments

Sub-2-μm-thick organic solar cells

[ Last edited by jimoyu on 2012-4-6 at 10:11 ]

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