No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.
A route to high gain photodetectors through suppressed recombination in disordered films
X. Gong, M. Tong, Y. Xia, W. Cai, J. S. Moon, Y. Cao, G. Yu, C.-L. Shieh, B. Nilsson, and A. J. Heeger, Science 325, 1665 (2009).
P. Bhattacharya, Semiconductor Optoelectronic Devices, 2nd ed. ( Prentice Hall, 1997).
G. Rieke, Detection of Light ( Cambridge University Press, Cambridge, 2002).
A. Paulke, S. D. Stranks, J. Kniepert, J. Kurpiers, C. M. Wolff, N. Schön, H. J. Snaith, T. J. K. Brenner, and D. Neher, Appl. Phys. Lett. 108, 113505 (2016).
M. Stolterfoht, B. Philippa, S. Shoaee, H. Jin, W. Jiang, R. D. White, P. L. Burn, P. Meredith, and A. Pivrikas, J. Phys. Chem. C 119, 26866 (2015).
Article metrics loading...
Secondary photocurrents offer an alternative mechanism to photomultiplier tubes and avalanche diodes for making high gain photodetectors that are able to operate even at extremely low light conditions. While in the past secondary currents were studied mainly in ordered crystalline semiconductors, disordered systems offer some key advantages such as a potentially lower leakage current and typically longer photocarrier lifetimes due to trapping. In this work, we use numerical simulations to identify the critical device and material parameters required to achieve high photocurrent and gain in steady state. We find that imbalanced mobilities and suppressed, non-Langevin-type charge carrier recombination will produce the highest gain. A low light intensity, strong electric field, and a large single carrier space charge limited current are also beneficial for reaching high gains. These results would be useful for practical photodetector
fabrication when aiming to maximize the gain.
Full text loading...
Most read this month