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We investigate the role of carrier distribution inside the i-region in the photocurrent collection mechanism of p-i-n quantum well solar cells. The device simulation indicates that the increment of Shockley-Read-Hall recombination after illumination strongly depends on the type of photocarriers and i-region majority carriers. As a result, a solar cell with n-type background doping results in efficient...
A difficulty of carrier transport in multiple quantum well (MQW) solar cells is one critical issue that limits their cell performance. Here, direct measurement of electron and hole transport times across InGaAs/GaAsP MQWs has been carried out using our proposed time-of-flight measurement technique on p-on-n and n-on-p MQW structures, respectively. The corresponding effective mobilities are determined,...
Carrier transport across multiple quantum well (MQW) structures inserted in the i-region of a p-i-n diode is an important mechanism that determines the performance of MQW solar cells. We have employed a carrier time-of-flight measurement technique using a quantum-well probe to investigate the electron transport time across MQW structures. Delay of the carrier arrival time, defined as time-of-flight,...
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