论文标题

可编程的电荷陷阱,用于无连接的无连接选择性提取太阳能电池的孔

Programmable Charge Trap for Junction-less selective extraction of holes in Solar Cells

论文作者

Bhatia, Swasti, Antony, Aldrin, Nair, Pradeep R.

论文摘要

选择性提取光电载体是太阳能电池的基本挑战,通常通过与相关的掺杂以及带偏移差异来实现。在这种情况下,我们在这里提出了一个新的范式,用于通过新的可编程电荷陷阱的新范式来选择多数载体,该量子包括可编程电荷陷阱,该电荷陷阱由氧化二硝酸盐氧化物(ONO)堆栈组成,并且具有持有电荷电荷的主要功能。通过详细的数值模拟,我们在这里表明,具有额外金属接触的电荷陷阱可以(i)补偿同质期的亚最佳钝化和优势孔的选择性,以及基于过渡金属氧化物的异质孔单元,以及(ii)的效率损失。拟议的计划及其易于整合和可编程绩效损失的能力,这是光伏社区的关注。

Selective extraction of photo-generated carriers is a fundamental challenge in solar cells which is usually achieved through junctions with the associated doping as well as band offset differences. In this context, here we propose a new paradigm for selective extraction for majority carriers through novel usage of the programmable charge trap which comprises of Oxide-Nitride-Oxide (ONO) stack and has the primary function of holding electrically injected charge. Through detailed numerical simulations, here we show that such a charge trap with an additional metal contact can (i) compensate for efficiency loss due to sub-optimal passivation and sub-optimal hole selectivity in homojunction as well as transition metal oxide-based heterojunction solar cells and (ii) can also function as a standalone hole selection scheme. The proposed scheme, with its easy integration and the capability of programmable compensation of performance loss, is of interest to the photovoltaic community.

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