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Nature piblishes an open-access Samsung paper "
Organic-on-silicon complementary metal–oxide–semiconductor colour image sensors" by Seon-Jeong Lim, Dong-Seok Leem, Kyung-Bae Park, Kyu-Sik Kim, Sangchul Sul, Kyoungwon Na, Gae Hwang Lee, Chul-Joon Heo, Kwang-Hee Lee, Xavier Bulliard, Ryu-Ichi Satoh, Tadao Yagi, Takkyun Ro, Dongmo Im, Jungkyu Jung, Myungwon Lee, Tae-Yon Lee, Moon Gyu Han, Yong Wan Jin, and Sangyoon Lee. The company proposes superposing an organic photodiode (OPD) onto a CMOS circuit with Si photodiodes, which is said to double the light-input surface area of each pixel:
 |
A G OPD is placed on top of the B and R color filters.
The G OPD detects the amount of G light, after which
the underlying Si PDs selectively detect the amounts
of B and R light through the B and R color filters,
respectively. |
Samsung publishes properties of its green OPD layer:
The dark current is fairly independent of temperature:
The paper concludes with a picture from 5MP Organic-on-Si imager:
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